SCHEDULE 14A INFORMATION
Proxy Statement Pursuant to Section 14(a) of the Securities
Exchange Act of 1934 (Amendment No. )

Filed by the Registrant [X]

Filed by a Party other than the Registrant [_]

Check the appropriate box:

[_] Preliminary Proxy Statement [_] Confidential, for Use of the
Commission Only (as permitted by
Rule 14a-6(e)(2))

[X] Definitive Proxy Statement

[_] Definitive Additional Materials

[_] Soliciting Material Pursuant to (S)240.14a-11(c) or (S)240.14a-12

PARAMETRIC TECHNOLOGY CORPORATION
------------------------------------------------
(Name of Registrant as Specified In Its Charter)

-----------------------------------------------------------------------
(Name of Person(s) Filing Proxy Statement if other than the Registrant)

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[X] No fee required

[_] Fee computed on table below per Exchange Act Rules 14a-6(i)(4) and 0-11.

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pursuant to Exchange Act Rule 0-11 (Set forth the amount on which the
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or the Form or Schedule and the date of its filing.

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PARAMETRIC TECHNOLOGY CORPORATION

128 TECHNOLOGY DRIVE
WALTHAM, MA 02154

NOTICE OF ANNUAL MEETING OF STOCKHOLDERS

TO BE HELD ON FEBRUARY 12, 1998

The Annual Meeting of Stockholders of Parametric Technology Corporation, a
Massachusetts corporation (the "Company"), will be held at the offices of the
Company, 128 Technology Drive, Waltham, MA 02154 on Thursday, February 12,
1998 at 9:00 a.m., local time, to consider and act upon the following matters:

1. To elect two Class II directors to serve for the ensuing three years.

2. To transact such other business as may be in furtherance of or
incidental to the foregoing.

Stockholders of record at the close of business on December 17, 1997 will
be entitled to vote at the meeting or any adjournment thereof. The stock
transfer books of the Company will remain open.

By Order of the Board of Directors,

MARTHA L. DURCAN, Clerk

Waltham, Massachusetts
January 7, 1998

WHETHER OR NOT YOU EXPECT TO ATTEND THE MEETING, PLEASE COMPLETE, DATE
AND SIGN THE ENCLOSED PROXY AND MAIL IT PROMPTLY IN THE ENCLOSED ENVELOPE IN
ORDER TO ENSURE REPRESENTATION OF YOUR SHARES. NO POSTAGE NEED BE AFFIXED IF
THE PROXY IS MAILED IN THE UNITED STATES.

PARAMETRIC TECHNOLOGY CORPORATION

128 TECHNOLOGY DRIVE
WALTHAM, MA 02154

PROXY STATEMENT FOR THE ANNUAL MEETING OF STOCKHOLDERS

TO BE HELD ON FEBRUARY 12, 1998

This Proxy Statement is furnished in connection with the solicitation
of proxies by the Board of Directors of Parametric Technology Corporation, a
Massachusetts corporation (the "Company"), for use at the Annual Meeting of
Stockholders to be held on February 12, 1998 and at any adjournment of that
meeting (the "Annual Meeting"). All proxies will be voted in accordance with
the stockholders' instructions contained therein. If no choice is specified,
proxies will be voted in favor of the election of the nominees named in this
Proxy Statement. Any proxy may be revoked by a stockholder at any time before
its exercise by delivery of a written revocation and subsequently dated proxy to
the Clerk of the Company or by revoking the proxy in writing and voting in
person at the Annual Meeting.

On December 17, 1997, the record date for the determination of
stockholders entitled to vote at the Annual Meeting, there were outstanding and
entitled to vote an aggregate of 128,284,154 shares of common stock of the
Company (the "Common Stock"). Stockholders are entitled to one vote per share
on all matters.

The Company's Annual Report for the fiscal year ended September 30,
1997 is being mailed to stockholders with the mailing of this Notice and Proxy
Statement on or about January 7, 1998.

VOTES REQUIRED

The affirmative vote of the holders of a plurality of the shares of
Common Stock represented and voting at the Annual Meeting is required for the
election of directors.

Shares of Common Stock represented in person or by proxy at the Annual
Meeting (including shares which abstain from or do not vote with respect to one
or more of the matters presented at the Annual Meeting and broker non-votes, as
described below) will be tabulated by the inspectors of election appointed for
the Annual Meeting and will determine whether or not a quorum is present. If a
broker holding stock in "street name" indicates on the proxy that it does not
have discretionary authority as to certain shares to vote on a particular
matter, those shares will not be considered as present and voting at the Annual
Meeting with respect to the matter (a "broker non-vote"). Neither an abstention
nor a broker non-vote will be treated as voting on a matter requiring a
plurality of the shares represented and voting. Accordingly, abstentions and
broker non-votes have no effect on the voting for the election of directors.

PRINCIPAL STOCKHOLDERS

The following table sets forth certain information, as of October 31, 1997,
with respect to the beneficial ownership of the Company's Common Stock by (i)
each person known by the Company to own beneficially more than 5% of the
outstanding shares of Common Stock based upon information provided to the
Company; (ii) each director and nominee for director; (iii) each executive
officer named in the Summary Compensation Table; and (iv) all directors and
executive officers of the Company as a group.

Number of Shares Percentage of Common
Beneficially Owned/(1)(2)/ Stock Outstanding/(3)/
------------------ --------------------

Janus Capital Corporation /(4)/ 13,141,825 10.27%
100 Fillmore Street
Denver, Colorado 80206-4923

Putnam Investments, Inc. /(5)/ 10,985,976 8.59%
One Post Office Square
Boston, MA 02109

Robert N. Goldman 11,250 *

Donald K. Grierson 1,250 *

Oscar B. Marx, III /(6)/ 45,250 *

Michael E. Porter 74,250 *

Noel G. Posternak 51,250 *

Steven C. Walske/(7)/ 921,500 *

C. Richard Harrison/(8)/ 654,904 *

Michael E. McGuinness/(8)/ 191,686 *

Edwin J. Gillis 154,379 *

John D. McMahon/(8)/ 135,321 *

All directors, nominees for
director and executive officers
as a group (14 persons) 2,320,675 1.80%

________________

* Less than 1% of outstanding shares of Common Stock.

(1) The inclusion herein of any shares deemed beneficially owned does not
constitute an admission of beneficial ownership of those shares. Unless
otherwise indicated, each stockholder referred to above has sole voting and
investment power with respect to the shares listed.

(2) The amounts listed include the following shares of Common Stock that may
be acquired on or prior to December 30, 1997 through the exercise of
options: Mr. Goldman, 11,250 shares; Mr. Grierson, 1,250 shares; Mr. Marx,
41,250 shares; Mr. Porter, 64,250 shares; Mr. Posternak, 41,250 shares;
Mr. Walske, 200,000 shares; Mr. Harrison, 488,700 shares; Mr. McGuinness,
133,100 shares; Mr. Gillis, 150,500 shares; Mr. McMahon, 119,918 shares;
and all directors and executive officers as a group, 1,327,842 shares.

(3) For purposes of determining the percentage of Common Stock outstanding,
the number of shares deemed outstanding is 127,936,236 shares outstanding
as of October 31, 1997 and any shares subject to options held by the
person or entity in question that are exercisable on or prior to December
30, 1997.

(4) Janus Capital Corporation ("JCC") has filed a Securities and Exchange
Commission Schedule 13G reporting the above stock ownership as of May 12,
1997, a copy of which has been sent to the Company. Stock reported as
being beneficially owned by JCC consists of stock held in managed
portfolios of several registered investment companies, to which JCC
assumes the role of investment advisor or sub-advisor. JCC shares voting
power and investment power with respect to all shares reported above, and
JCC expressly disclaims beneficial ownership of all such stock.

(5) Putnam Investments, ("PI") has filed a Securities and Exchange Commission
Schedule 13G reporting the above stock ownership as of January 30, 1997, a
copy of which has been sent to the Company. Stock reported as being
beneficially owned by PI consists of stock held in client accounts of
subsidiaries of PI that are registered investment advisors. PI and its
subsidiaries share voting power with respect to 715,110 shares and share
investment power with respect to 10,985,976 shares. PI expressly disclaims
beneficial ownership of all such stock.

(6) 4,000 shares are held by the O.B. Marx, III Revocable Trust.

(7) 115,000 shares are held by the Walske-Longtine Foundation.

(8) The amounts listed include the following shares of Common Stock owned by
the named person jointly with his or her spouse: Mr. Harrison, 4,304
shares; Mr. McGuinness, 206 shares; and Mr. McMahon, 15,403 shares.

ELECTION OF DIRECTORS

The Company's Board of Directors is divided into three classes with
staggered three-year terms. There are currently three Class I directors, two
Class II directors and two Class III directors, whose terms expire,
respectively, at the 2000, 1998 and 1999 Annual Meetings of Stockholders (in all
cases subject to the election and qualification of their successors and to their
earlier death, resignation or removal). At each Annual Meeting of Stockholders,
directors are elected for a term of three years to succeed those directors whose
terms then expire. The two Class II directors elected at the Annual Meeting
will be elected to serve until the 2001 Annual Meeting of Stockholders (subject
to the election and qualification of their successors and to their earlier
death, resignation or removal).

THE PERSONS NAMED IN THE ENCLOSED PROXY WILL VOTE TO ELECT MICHAEL E.
PORTER AND STEVEN C. WALSKE AS CLASS II DIRECTORS, UNLESS AUTHORITY TO VOTE FOR
THE ELECTION OF EITHER OF THE NOMINEES IS WITHHELD BY MARKING THE PROXY TO THAT
EFFECT. Each of the nominees is currently a Class II director of the Company.

Each of the nominees has indicated his willingness to serve, if elected;
however, if any nominee should be unable or unwilling to stand for election,
proxies may be voted for a substitute nominee designated by the Board of
Directors.

The table on the following page sets forth, for each nominee as a Class II
director and for each director of the Company whose term continues after the
Annual Meeting, his name and age, his positions and offices with the Company,
his principal occupations and business experience for the past five years, the
names of other publicly-held companies of which he is a director, the year since
which he has served as a director of the Company, and the year his term as a
director of the Company will expire.

Name, Age, Principal Occupation, Director Term
Business Experience and Directorships Since Expires
------------------------------------- -------- -------

NOMINEES FOR CLASS II DIRECTORS:

Michael E. Porter, age 50 1995 1998
Professor at Harvard Business School since 1973; director of
Thermo Quest Corporation, Alpha Beta Technologies, Inc., and
Falcon Drilling Corporation.

Steven C. Walske, age 45 1986 1998
Chairman of the Board of Directors of the Company since August
1994; Chief Executive Officer of the Company since December
1986; President of the Company from December 1986 to August 1994;
director of Synopsys, Inc., Video Server, Inc., and Object Design Inc.

CONTINUING DIRECTORS:

CLASS I DIRECTORS

Donald K. Grierson, age 63 1987 2000
Chief Executive Officer and President of ABB Vetco Gray, Inc.,
an oil services business, since May 1991;
director of Alpha Technology, Inc.

Oscar B. Marx, III, age 59 1995 2000
Chief Executive Officer and President of TMW Enterprises, an
autoparts business, since July 1995; Chief Executive Officer and
President of Electro - Wire Products, Inc., an electrical distribution
company, from June 1994 to July 1995; Vice President -
Automotive Components Group of Ford Motor Company from
January 1988 to June 1994; director of Tesma International.

Noel G. Posternak, age 61 1989 2000
Senior Partner in the law firm of Posternak, Blankstein & Lund, L.L.P.
since 1980.

CLASS III DIRECTORS

C. Richard Harrison, age 42 1994 1999
President and Chief Operating Officer of the Company since August
1994; Senior Vice President of Sales and Distribution of the Company
from September 1991 to August 1994.

Robert N. Goldman, age 48 1991 1999
Chief Executive Officer and President of Object Design Inc., a software
developer since November 1995; Chairman of the Board of Trinzic Corp.,
a software developer, from June 1986 to August 1995; Chief Executive
Officer of Trinzic Corp. from June 1986 to October 1992;
director of Intersolv, Inc., SystemSoft Corporation, Citrix Systems and
Object Design Inc.

BOARD AND COMMITTEE MEETINGS

The Board of Directors held six meetings during the fiscal year ended
September 30, 1997. Each director attended at least 75% of the aggregate of the
total number of meetings of the Board of Directors and of other meetings held by
all committees of the Board of Directors on which he then served.

The Board of Directors has an Audit Committee which meets with the
Company's independent accountants and reports on such meetings to the Company's
Board of Directors. The Audit Committee reviews the performance of the
independent accountants in the annual audit and in assignments unrelated to the
audit, reviews fees of the independent accountants, discusses the Company's
internal accounting control policies and procedures and considers and recommends
the selection of the Company's independent accountants. The Audit Committee met
five times during the fiscal year ended September 30, 1997. The fiscal 1997
Audit Committee members were Messrs. Grierson, Marx and Porter (Chairman). The
current members of the Audit Committee are Messrs. Marx, Porter (Chairman), and
Posternak.

The Board of Directors has a Compensation Committee which provides
recommendations to the Board of Directors regarding executive and employee
compensation and administers the Company's bonus programs, the Company's 1987
Incentive Stock Option Plan (the "1987 Option Plan"), the 1997 Incentive Stock
Option Plan (the "ISO Plan"), the 1997 Nonstatutory Stock Option Plan (the "NSO
Plan"), and the 1991 Employee Stock Purchase Plan. The Compensation Committee
met twice during the fiscal year ended September 30, 1997. The fiscal 1997
Compensation Committee members were Messrs. Goldman (Chairman) and Posternak.
Messrs. Goldman (Chairman) and Posternak also constituted the Officers' Stock
Option Committee, which grants stock options under the 1987 Option Plan and the
ISO Plan to employee directors and officers subject to Section 16 (collectively
"Section 16 Officers") of the Securities Exchange Act of 1934, as amended. The
Officers' Stock Option Committee met five times during the fiscal year ended
September 30, 1997. The current members of both the Compensation Committee and
the Officers' Stock Option Committee are Messrs. Goldman (Chairman) and
Grierson.

DIRECTOR COMPENSATION

During the fiscal year ended September 30, 1997, directors who were not
employees of the Company received the following directors' fees in consideration
of their services as directors of the Company: an annual retainer in the amount
of $10,000 and $2,000 per Board of Directors meeting attended, as well as
reimbursement of travel expenses. Members of the Audit Committee of the Board
of Directors received a fee of $1,000 per meeting of the Audit Committee
attended. Members of the Compensation Committee of the Board of Directors
received a fee of $1,000 per meeting of the Compensation Committee attended.
Directors who are also employees of the Company do not receive any compensation
for their services as directors of the Company.

Under the Company's 1996 Director Stock Option Plan (the "1996 Director
Plan"), which superseded the 1992 Director Stock Option Plan (the "1992 Director
Plan"), non-qualified stock options to purchase 20,000 shares (subject to future
adjustment for stock splits and similar capital changes) of Common Stock are
automatically granted to each outside director at the time of initial election
to the Board of Directors at an annual meeting or otherwise. In addition,
immediately following the Annual Meeting of Stockholders each year, each outside
director continuing in office will automatically be granted options to purchase
5,000 shares (subject to future adjustment for stock splits and similar capital
changes) of Common Stock. Accordingly, options to purchase 5,000 shares of
Common Stock were automatically granted to Messrs. Goldman, Grierson, Marx,
Porter, and Posternak on February 13, 1997. The options become exercisable in
four equal annual installments commencing one year following the date of grant,
but only if the option holder is a director on that anniversary date. Options
have a term of ten years and an exercise price equal to the fair market value of
the Common Stock on the grant date, which will be the closing price of the
Company's Common Stock as reported by the Nasdaq Stock Market on the date of
grant.

COMPENSATION OF EXECUTIVE OFFICERS

The following table provides certain information for the fiscal years ended
September 30, 1997, 1996 and 1995 concerning compensation paid to or accrued for
the Company's Chief Executive Officer and the other four most highly compensated
executive officers who were serving as executive officers of the Company on
September 30, 1997 and whose salary and bonus for fiscal year 1997 exceeded
$100,000.

SUMMARY COMPENSATION TABLE

Long-Term Compensation
----------------------
Awards
Annual Compensation ---------------------- All Other
----------------------- Shares Underlying Compen-
Name and Principal Position Year Salary($)/(1)/ Bonus($)/(2)/ Options(#)/(3)(4)/ sation($)/(5)/
- --------------------------- ---- --------- -------- ---------------------- --------------

Steven C. Walske 1997 345,000 385,000 600,000 4,750
Chairman of the Board 1996 330,000 700,000 300,000 3,167
of Directors and Chief 1995 300,000 500,000 600,000 4,620
Executive Officer

C. Richard Harrison 1997 290,000 385,000 600,000 4,750
President and Chief 1996 275,000 700,000 300,000 3,167
Operating Officer 1995 250,000 500,000 600,000 3,968

Michael E. McGuinness/(6)/ 1997 60,000 575,239 200,000 5,096
Former Executive Vice President 1996 60,000 538,628 220,000 3,000
of Research & Development 1995 60,000 498,362 150,000 2,990
and Product Marketing

Edwin J. Gillis 1997 250,000 225,000 200,000 4,750
Executive Vice President of 1996 250,000 300,000 150,000 3,167
Finance and Administration, 1995 0 0 300,000 0
Chief Financial Officer and Treasurer

John D. McMahon 1997 53,923 326,025 200,000 2,500
Executive Vice President of 1996 50,000 264,452 111,000 2,500
World Wide Sales 1995 50,000 189,841 28,000 1,938

- ----------------

(1) Salary includes amounts deferred pursuant to the Parametric Technology
Corporation 401(k) Savings Plan.

(2) Amounts shown, except for those discussed below relating to Messrs.
McGuinness and McMahon, are the awards made under the Company's incentive
plans, which amounts are earned and accrued during the fiscal years
indicated and paid subsequent to the end of each fiscal year. $372,239 of
the amount shown in Fiscal Year 1997 and all amounts shown for Fiscal
Years 1996 and 1995 for Mr. McGuinness are comprised of sales commissions
based on revenue. Mr. McGuinness became entitled to receive awards under
the Company's incentive plans beginning in the second quarter of Fiscal
Year 1997 (with awards to be pro-rated accordingly). Prior to such date,
Mr. McGuinness was not entitled to receive awards under the Company's
incentive plans. All amounts shown for Mr. McMahon are comprised of sales
commissions based on revenue and Mr. McMahon is not entitled to receive
awards under the Company's incentive plans.

(3) Amounts shown for Fiscal Year 1996 include stock options granted on
October 2, 1996, which are correspondingly not included in Fiscal Year
1997 figures.

(4) Amounts shown are adjusted to reflect the one-for-one stock dividend
declared by the Company on February 8, 1996 which became effective
February 29, 1996.

(5) Amounts shown are the Company's matching contributions made under the
Parametric Technology Corporation 401(k) Savings Plan.

(6) Mr. McGuinness resigned his position as Executive Vice President of
Research & Development and Product Marketing effective November 13, 1997.
He will remain with the Company in the role of Senior Sales Consultant.

FISCAL YEAR 1997 STOCK OPTION GRANTS

The following table provides information regarding options granted under
the Company's stock option plans for the fiscal year ended September 30, 1997 to
the executive officers named in the Summary Compensation Table.

Individual Grants
------------------------------------------------------------
Number of Potential Realizable Value
Shares Percentage of Total at Assumed Annual Rates
Underlying Options Granted Exercise of Stock Price Appreciation
Options to Employees for Price Per Expiration for Option Term/(3)/
Name Granted(#)/(1)/ Fiscal Year(%)/(2)/ Share($) Date 5%($)/(4)/ 10%($)/(4)/
- ---- ---------- -------------- ---------- ---------- ---------- -----------

Steven C. Walske 300,000 4.35% 48.00 5/15/07 9,056,083 22,949,891
300,000 4.35% 44.125 9/30/07 8,324,993 21,097,166

C. Richard Harrison 300,000 4.35% 48.00 5/15/07 9,056,083 22,949,891
300,000 4.35% 44.125 9/30/07 8,324,993 21,097,166

Michael E. McGuinness 100,000 1.45% 48.00 5/15/07 3,018,694 7,649,964
100,000 1.45% 44.125 9/30/07 2,774,998 7,032,389

Edwin J. Gillis 100,000 1.45% 48.00 5/15/07 3,018,694 7,649,964
100,000 1.45% 44.125 9/30/07 2,774,998 7,032,389

John D. McMahon 100,000 1.45% 48.00 5/15/07 3,018,694 7,649,964
100,000 1.45% 44.125 9/30/07 2,774,998 7,032,389

(1) All options granted to the named executive officers are exercisable in
four equal annual installments, commencing one year after the date of
grant. The exercise price of each option is at least 100% of the fair
market value of the Company's Common Stock on the date the option was
granted. The exercise price may be paid in cash or, subject to certain
limitations for shares previously acquired upon exercise of options, in
shares of Common Stock, or in a combination of cash and shares. Pursuant
to employment agreements, the options held by the named executive officers
become exercisable in full upon a "change in control" of the Company (as
described under the section entitled "Employment Agreements") or, for
Messrs. Walske and Harrison only, upon the individual's death or
disability, and the options held by Messrs. Walske and Harrison become
exercisable for the number of shares for which they would have been
exercisable had the optionee's employment continued for an additional year
after the termination of the optionee's employment without "cause" or
after a "change in status."

(2) For the fiscal year ended September 30, 1997, the Company granted options
under the 1987 Option Plan, ISO Plan and NSO Plan to its employees and
consultants to purchase a total of 6,898,000 shares of Common Stock
(excluding Fiscal 1996 options granted on October 2, 1996) and canceled
options to purchase 1,569,919 shares of Common Stock.

(3) The dollar amounts under these columns are the result of calculations at
the 5% and 10% appreciation rates set by the Securities and Exchange
Commission and, therefore, are not intended to forecast possible future
appreciation, if any, in the price of the Common Stock. No gain to the
optionees is possible without an increase in the price of the Common
Stock, which will benefit all stockholders proportionately.

(4) In order to realize the potential values over the ten year option term set
forth in the 5% and 10% columns of this table, the per share price of the
Common Stock at the end of the option term would be as follows:

Date of Exercise Price Prices at: Percentage Increases at:
------- -------------- -------------- -----------------------
Grant per Share ($) 5% 10% 5% 10%
------- -------------- ----- ------- ----- ------
5/15/97 48.00 78.19 124.50 63% 159%
9/30/97 44.125 71.87 114.45 63% 159%

AGGREGATED OPTION EXERCISES IN FISCAL YEAR 1997 AND FY-END OPTION VALUES

The following table sets forth information regarding stock options
exercised by the named executive officers during fiscal 1997 and the value of
in-the-money unexercised options held by them as of September 30, 1997.

Number of Shares Value of Unexercised
Underlying Unexercised In-the-Money Options
Options at FY-End (#) at FY-End($)/(2)/
Shares ---------------------- --------------------
Acquired on Value Exercisable/ Exercisable/
Name Exercise Realized ($)/(1)/ Unexercisable Unexercisable
- ----------------------- ----------- ----------------- ---------------------- --------------------

Steven C. Walske 330,000 10,327,612 175,000/ 3,331,250/
1,200,000 8,103,125

C. Richard Harrison 250,000 9,862,810 463,700/ 10,516,216/
1,250,000 9,712,500

Michael E. McGuinness 152,000 6,523,041 93,100/ 1,514,206/
490,000 2,360,156

Edwin J. Gillis 37,000 1,049,585 138,000/ 1,582,000/
475,000 2,100,000

John D. McMahon 42,332 1,703,779 82,168/ 2,092,196/
332,000 972,062

- -----------
(1) Market value of the underlying shares on the date of exercise less the
option exercise price.

(2) Market value of shares covered by in-the-money options on September 30,
1997, less the option exercise price. Options are in-the-money if the
market value of the shares covered thereby is greater than the option
exercise price.

REPORT OF THE COMPENSATION COMMITTEE

The Compensation Committee of the Board of Directors is composed of
two outside directors. The two outside directors also serve as the Officers'
Stock Option Committee to grant stock options to Section 16 Officers. The
compensation for the Company's executive officers is set by the Board of
Directors, after consideration of the Compensation Committee's recommendations.

Compensation Objectives

The basic philosophy underlying the Company's compensation programs is
to align executive compensation with increases in stockholder value. Several
key objectives are reflected within this basic philosophy, one of which is to
enable the Company to attain its annual market penetration and financial
targets. Another key objective is to ensure that a major portion of each
executive's cash compensation is linked to significant improvements in the
Company's financial performance. The third key objective is to make it possible
for the Company to attract, retain and reward executives who are responsible for
leading the Company in achieving or exceeding corporate performance goals.

Compensation Deductibility

Section 162(m) of the Internal Revenue Code of 1986, as amended (the
"Code"), imposes a limit on tax deductions for annual compensation in excess of
one million dollars paid by a corporation to its chief executive officer and the
other four most highly compensated executive officers of the corporation. This
provision excludes certain forms of "performance based compensation," including
options granted under the 1987 Option Plan and the ISO Plan, from the
compensation taken into account for the purposes of that limit. The Committee
believes that, although it is desirable for executive compensation to be tax
deductible whenever in the Committee's judgment that would be consistent with
the objectives pursuant to which the particular compensation is paid, the
Company should compensate its executive officers fairly in accordance with the
guidelines discussed in this report and not be unduly limited by the anticipated
tax treatment. Accordingly, the total compensation paid to an executive officer
in any year may exceed the amount that is deductible. The Compensation
Committee will continue to assess the impact of Section 162(m) of the Code on
its compensation practices and determine what further action, if any, is
appropriate.

Executive Compensation Programs

The Company's executive compensation programs, which contain no
special perquisites, consist of three principal elements: base salary, cash
bonus and stock options. The Company's objective is to emphasize incentive
compensation in the form of bonuses and stock option grants, rather than base
salary. The Board of Directors sets the annual base salary for executives after
consideration of the recommendations of the Compensation Committee. Prior to
making its recommendations, the Compensation Committee reviews historical
compensation levels of the executives, evaluations of past performance and
assessments of expected future contributions of the executives. In making the
determinations regarding base salaries, the Company considers generally
available information regarding salaries prevailing in the industry but does not
utilize any particular indices.

The Company maintains incentive plans (the "IPs") under which
executive officers (including the Chief Executive Officer), other than the
officers participating in sales activities, are paid cash bonuses subsequent to
the end of each fiscal year. The executive officers who do not participate in
the IPs are paid a commission based on revenue. The bonuses under the IPs are
dependent primarily on the Company's financial performance and achievement of
corporate objectives established by the Board of Directors prior to the start of
each fiscal year.

The IPs for fiscal 1997 set forth three performance factors including,
for each participating officer, earnings per share and revenue. The third
factor for two of the participating officers (including the Chief Executive
Officer) was based upon the number of software seats licensed, and for the
remaining officers not participating in sales activities, on other individual
performance goals. Three different target levels were established for each
performance factor and a gross target bonus corresponding to each of the three
target levels was set. A weight was then assigned to each of the performance
factors and the actual bonus earned was calculated using a formula which weighed
the three performance factors. If the Company failed to meet the minimum
profitability target for fiscal 1997, the executives would not have been
eligible to receive a cash bonus.

The various elements of the bonus calculation formula were set by the Board of
Directors, after consideration of the Compensation Committee's recommendation.

Total compensation for executive officers also includes long-term
incentives offered by stock options, which are generally provided through
initial stock option grants at the date of hire and periodic additional stock
option grants. Stock options serve as compensation and are instrumental in
promoting the alignment of long-term interests between the Company's executive
officers and stockholders due to the fact that executives realize gains only if
the stock price increases over the fair market value at the date of grant and
the executives exercise their options. In determining the amount of such
grants, the Officers' Stock Option Committee evaluates the job level of the
executive, responsibilities to be assumed in the upcoming fiscal year,
contributions of each executive to the overall success of the Company and
accordingly to the Company's market value, the opportunity presented by the
current price of the Company's Common Stock to provide the executive with long-
term incentives to remain at the Company, and the awards made to each such
officer in prior years relative to the Company's overall performance. It has
been the Company's practice to fix the exercise price of options, which
generally become exercisable in equal annual installments over a period of four
years commencing one year after the date of grant, at 100% of the fair market
value on the date of grant. Therefore, the long-term value realized by
executives through option exercises can be directly linked to the enhancement of
stockholder value.

Chief Executive Officer Compensation

The Chief Executive Officer's performance was evaluated, and his
compensation determined, in accordance with the factors described above
applicable to executive officers generally. For the fiscal year ended September
30, 1997, the Chief Executive Officer earned a cash bonus of $385,000, which
represented 53% of his total cash compensation (base salary plus cash bonus).
This amount reflects the increases in earnings per share of 38% (excluding
nonrecurring charges), revenue of 35%, and the number of software seats licensed
of 30% over the prior year.

For the fiscal year ended September 30, 1997, the Officers' Stock
Option Committee granted to the Chief Executive Officer options to purchase
600,000 shares of the Company's Common Stock. The amount of the grant reflects
the senior position held by the Chief Executive Officer within the Company, the
results achieved by the Company during fiscal 1997, and the significant
contributions anticipated to be made by the Chief Executive Officer in the
future.

Compensation Committee

Robert N. Goldman, Chairman
Noel G. Posternak

CERTAIN BUSINESS RELATIONSHIPS

On May 15, 1997, Michael E. Porter entered into a consulting arrangement
with the Company whereby Mr. Porter will participate in and aid in the
development of a series of top management seminars to be sponsored by the
Company. Mr. Porter, for these services, received an option to purchase 25,000
shares of the Company's Common Stock at a price of $48.00 per share, the fair
market value of the Common Stock on the date of grant.

COMPENSATION COMMITTEE INTERLOCKS AND INSIDER PARTICIPATION

Noel G. Posternak is a Senior Partner in the law firm of Posternak,
Blankstein & Lund, L.L.P., which firm has provided legal services to the Company
during the last fiscal year and may do so during the current fiscal year.

Robert N. Goldman (Chairman) and Donald K. Grierson constitute both the
current Compensation Committee and Officers' Stock Option Committee of the Board
of Directors. Steven C. Walske, the Company's Chairman and Chief Executive
Officer, serves on the Board of Directors of Object Design Inc., a software
development company whose Chief Executive Officer and President is Robert N.
Goldman.

Stock Performance Graph

The Stock Performance Graph set forth below compares the cumulative
stockholder return on the Common Stock of the Company from September 30, 1992 to
September 30, 1997, with the cumulative total return of the Nasdaq (U.S.
Companies) Index and the Nasdaq Computer & Data Processing Index over the same
period. The Stock Performance Graph assumes that the value of the investment in
the Company's Common Stock and each of the comparison groups was $100 on
September 30, 1992 and assumes the reinvestment of dividends. The Company has
never declared a dividend on the Common Stock of the Company. The stock price
performance depicted in the graph below is not necessarily indicative of future
price performance.

COMPARISON OF CUMULATIVE TOTAL RETURN AMONG PARAMETRIC TECHNOLOGY
CORPORATION, NASDAQ (U.S. COMPANIES) INDEX AND NASDAQ COMPUTER
AND DATA PROCESSING INDEX

[GRAPH APPEARS HERE]

9/30/92 9/30/93 9/30/94 9/29/95 9/30/96 9/30/97
------- ------- ------- ------- ------- -------
Parametric Technology
Corporation $100 $173 $142 $263 $423 $378
Nasdaq (U.S. Companies)
Index 100 131 132 182 216 297
Nasdaq Computer & Data
Processing Index 100 119 133 212 263 356

EMPLOYMENT AGREEMENTS

Agreement with Mr. Walske

The Company has entered into an agreement with Mr. Walske which provides for
certain benefits for him in the event of a termination of his employment under
certain circumstances and upon the occurrence of certain events. Under the
agreement, in the event the Company elects to terminate Mr. Walske's employment
(other than for "cause," as defined in the agreement), or effects a "change in
status" of Mr. Walske (which, as defined in the agreement, includes a diminution
in title, responsibilities or compensation), Mr. Walske shall be entitled to
receive (i) during the six-month period following such an event (or until such
earlier date as he commences employment with another company), a salary at a
rate equal to two times the highest annual salary (excluding bonuses) received
by him in the prior six months, and (ii) provided he remains employed with the
Company for such six-month period, a bonus equal to Mr. Walske's most recent
fiscal year-end bonus. The agreement also provides that the outstanding options
held by Mr. Walske under the Company's Option Plans shall become exercisable
(i) in full upon a "change in control" of the Company, which in general includes
(a) any person becoming the beneficial owner of 50% or more of the voting power
of the Company, (b) a change in a majority of the Company's directors, or (c)
the approval by the stockholders of a merger or consolidation in which the
Company's stockholders do not have majority voting power of the surviving
entity, a liquidation of the Company or a sale or disposition of all or
substantially all of the Company's assets, or upon the death or disability of
Mr. Walske, and (ii) for such number of shares of Common Stock for which they
would have otherwise become exercisable had Mr. Walske's employment continued
for one year following a termination of his employment without "cause" or a
"change in status" of Mr. Walske.

Agreement with Mr. Harrison

The Company has entered into an agreement with Mr. Harrison which provides
for certain benefits for him in the event of a termination of his employment
under certain circumstances and upon the occurrence of certain events. The
benefits provided under this agreement are substantially similar to those
provided to Mr. Walske discussed above under this section except for the
following: in the event the Company elects to terminate the employment of Mr.
Harrison without "cause," or effects a "change in status" of Mr. Harrison,
there is no provision for a bonus to be paid to Mr. Harrison.

Agreements with Messrs. Gillis, McGuinness, and McMahon

The Company has entered into agreements with Messrs. Gillis, McGuinness and
McMahon which provide that (i) in the event the Company terminates the
employment of the officer without "cause," he is entitled to receive, during the
six-month period following notice of termination (or until such earlier date as
he commences employment with another company) a salary at a rate equal to the
highest annual salary (excluding bonuses) received by him in the prior six
months and (ii) in the event of a change in control of the Company, the
outstanding options held by the officer under the Company's option plans shall
become exercisable in full. Mr. McGuinness resigned his position as Executive
Vice President of Research & Development and Product Marketing effective
November 13, 1997. Mr. McGuinness' above mentioned agreement remains in effect
except as superseded by a new agreement entered into in November 1997 under
which the Company (i) will continue to employ him as Senior Sales Consultant at
an annual salary of $120,000 for a term which ends on November 30, 1998, or
until his earlier commencement of full-time employment with another company, and
(ii) may terminate his employment only for "cause".

INFORMATION CONCERNING INDEPENDENT ACCOUNTANTS

The Board of Directors has appointed the firm of Coopers & Lybrand L.L.P. to
serve as the Company's independent accountants for the fiscal year ending
September 30, 1998.

On November 17, 1995 the Board of Directors of the Company upon
recommendation of its Audit Committee approved a change in the Company's
independent accountants from Price Waterhouse LLP to Coopers & Lybrand L.L.P.
effective for the fiscal year ended September 30, 1996. Price Waterhouse LLP
served as the Company's independent accountants for fiscal years 1992 through
1995. During these periods, the Company did not have any disagreements with
Price Waterhouse LLP on any matter of accounting principles or practices,
financial statement disclosure or auditing scope or procedure, nor did any
reports issued by Price Waterhouse LLP contain an adverse opinion or a
disclaimer of opinion, nor were such reports qualified or modified as to
uncertainty, audit scope or accounting principles.

Representatives of Coopers & Lybrand L.L.P. are expected to be present at
the Annual Meeting. They will have the opportunity to make a statement if they
desire to do so and will also be available to respond to appropriate questions
from stockholders.

OTHER MATTERS

While the Notice of Meeting calls for transaction of such other business as
may be in furtherance of, or incidental to, the matters described in the Notice,
the Board of Directors does not know of any other matters which may come before
the Annual Meeting. However, if any other matters are properly presented to the
Annual Meeting, it is the intention of the persons named in the accompanying
proxy to vote, or otherwise act, in accordance with their judgment on such
matters.

All costs of solicitation of proxies will be borne by the Company. The
Company's directors, officers and regular employees, without additional
remuneration, may solicit proxies by telephone, telegraph and personal
interviews. Brokers, custodians and fiduciaries will be requested to forward
proxy soliciting material to the owners of stock held in their names, and the
Company will reimburse them for their reasonable out-of-pocket expenses incurred
in connection with the distribution of proxy materials.

Proposals of stockholders intended to be presented at the 1999 Annual
Meeting of Stockholders must be received by the Company at its principal office
in Waltham, Massachusetts not later than September 11, 1998 for inclusion in the
proxy statement for that meeting. In order to curtail controversy as to the date
on which a proposal was received by the Company, proponents should submit their
proposals by Certified Mail-Return Receipt Requested.

By Order of the Board of Directors,

MARTHA L. DURCAN, Clerk

January 7, 1998

THE BOARD OF DIRECTORS HOPES THAT STOCKHOLDERS WILL ATTEND THE MEETING.
WHETHER OR NOT YOU PLAN TO ATTEND, YOU ARE URGED TO COMPLETE, DATE, SIGN AND
RETURN THE ENCLOSED PROXY IN THE ACCOMPANYING ENVELOPE. A PROMPT RESPONSE WILL
GREATLY FACILITATE ARRANGEMENTS FOR THE MEETING AND YOUR COOPERATION WILL BE
APPRECIATED. STOCKHOLDERS WHO ATTEND THE MEETING MAY VOTE THEIR STOCK PERSONALLY
EVEN THOUGH THEY HAVE SENT IN THEIR PROXIES.

PARAMETRIC TECHNOLOGY CORPORATION

PROXY FOR 1998 ANNUAL MEETING OF STOCKHOLDERS

FEBRUARY 12, 1998

The undersigned, having received notice of and the Proxy Statement relating
to the 1998 Annual Meeting of Stockholders to be held on February 12, 1998, at
9:00 a.m. at 128 Technology Drive, Waltham, MA 02154, and revoking all prior
proxies, hereby appoint(s) Edwin J. Gillis and Martha L. Durcan, and each of
them acting singly, with full power of substitution, as proxies to represent
and vote on behalf of the undersigned, as designated below, all shares of
common stock, $ .01 par value per share, (the "Common Stock") of Parametric
Technology Corporation (the "Company") which the undersigned would be entitled
to vote if personally present at the 1998 Annual Meeting of Stockholders and
any adjournment or adjournments thereof (the "Annual Meeting"). IN THEIR
DISCRETION, THE PROXIES ARE AUTHORIZED TO VOTE UPON SUCH OTHER MATTERS AS MAY
PROPERLY COME BEFORE THE ANNUAL MEETING.

(TO BE SIGNED ON REVERSE SIDE)

-----------
SEE REVERSE
SIDE
-----------

[X] PLEASE MARK YOUR
VOTES AS IN THIS
EXAMPLE.

FOR WITHHELD
Election of [_] [_] NOMINEES: Michael E. Porter and
directors Steven C. Walske

For, except vote withheld from the following nominee:

- --------------------------------------------------------

This Proxy when properly executed will
be voted in the manner directed herein
by the undersigned stockholder. IF A
CHOICE IS NOT SPECIFIED WITH RESPECT TO
THE ABOVE PROPOSAL, THIS PROXY WILL BE
VOTED FOR SUCH PROPOSAL. Attendance of
the undersigned at the Annual Meeting
will not be deemed to revoke this Proxy
unless the undersigned shall revoke this
Proxy in writing and shall vote in
person at the Annual Meeting.

EACH STOCKHOLDER SHOULD SIGN THIS PROXY
PROMPTLY AND RETURN IT IN THE ENCLOSED
ENVELOPE. THIS PROXY IS SOLICITED ON
BEHALF OF THE BOARD OF DIRECTORS OF THE
COMPANY.

SIGNATURE(S) DATE
----------------------------------------------- ----------------

NOTE: Please sign name(s) exactly as appearing on your stock certificate. If
shares are held jointly, each joint owner should personally sign. When
signing as attorney, executor, administrator, trustee or guardian, please
give full title as such. If a corporation, please sign full corporate name
by President or other authorized officer. If a partnership, please sign in
partnership name by authorized person.