EXHIBIT-99.CODE ETH

                      KAYNE ANDERSON MLP INVESTMENT COMPANY

                    SUPPLEMENTAL ANTIFRAUD CODE OF ETHICS FOR
                PRINCIPAL OFFICERS AND SENIOR FINANCIAL OFFICERS

The Board of Directors (the "Board") of Kayne Anderson MLP Investment Company
(the "Company") has adopted this Supplemental Antifraud Code of Ethics (the
"Code") for the Company's Principal Officers and Senior Financial Officers (the
"Covered Officers") to guide and remind the Covered Officers of their
responsibilities to the Company and its stockholders, other Covered Officers,
and governmental authorities. Covered Officers are expected to act in accordance
with the guidance and standards set forth in this Code.

For the purposes of this Code, the Company's Principal Officers and Senior
Financial Officers shall include: the Principal Executive Officer; the Principal
Financial Officer; the Principal Accounting Officer; the Controller; and any
persons performing similar functions on behalf of the Company, regardless of
whether such persons are employed by the Company or a third party.

This Code is intended to serve as the code of ethics described in Section 406 of
The Sarbanes-Oxley Act of 2002 and Form N-CSR. To the extent that a Covered
Officer is subject to the Company's code of ethics adopted pursuant to Rule
17j-1 (the "Rule 17j-1 Code") of the Investment Company Act of 1940, as amended
(the "Investment Company Act"), this Code is intended to supplement and be
interpreted in the context of the Rule 17j-1 Code. This Code also should be
interpreted in the context of all applicable laws, regulations, the Company's
Charter and Bylaws, as amended, and all other governance and disclosure policies
and documents adopted by the Board. All Covered Officers must become familiar
and fully comply with this Code. Because this Code cannot and does not cover
every applicable law or provide answers to all questions that might arise, all
Covered Officers are expected to use common sense about what is right and wrong,
including a sense of when it is proper to seek guidance from others on the
appropriate course of conduct.

The purpose of this Code is to set standards for the Covered Officers that are
reasonably designed to deter wrongdoing and are necessary to promote:

      -     honest and ethical conduct, including the ethical handling of actual
            or apparent conflicts of interest between personal and professional
            relationships;

      -     full, fair, accurate, timely, and understandable disclosure in
            reports and documents that the Company files with, or submits to,
            the Securities and Exchange Commission (the "SEC") and in any other
            public communications by the Company;

      -     compliance with applicable governmental laws, rules and regulations;

      -     the prompt internal reporting of violations of the Code to the
            appropriate persons as set forth in the Code; and

      -     accountability for adherence to the Code.



1.    HONEST AND ETHICAL CONDUCT

a.    HONESTY, DILIGENCE AND PROFESSIONAL RESPONSIBILITY

Covered Officers are expected to observe both the form and the spirit of the
ethical principles contained in this Code. Covered Officers must perform their
duties and responsibilities for the Company:

      -     with honesty, diligence, and a commitment to professional and
            ethical responsibility;

      -     carefully, thoroughly and in a timely manner; and

      -     in conformity with applicable professional and technical standards.

Covered Officers who are certified public accountants are expected carry out
their duties and responsibilities in a manner consistent with the principles
governing the accounting profession, including any guidelines or principles
issued by the Public Company Accounting Oversight Board or the American
Institute of Certified Public Accountants from time to time.

b.    OBJECTIVITY / AVOIDANCE OF UNDISCLOSED CONFLICTS OF INTEREST

Each Covered Officer should adhere to a high standard of business ethics and
should be sensitive to situations that may give rise to actual as well as
apparent conflicts of interest. A "conflict of interest" occurs when a Covered
Officer's private interest interferes with the interests of, or the Covered
Officer's service to, the Company. The overarching principle is that Covered
Officers are expected to maintain objectivity, to avoid undisclosed conflicts of
interest, and to not improperly place their personal interests before the
interests of the Company. In the performance of their duties and
responsibilities for the Company, Covered Officers must:

      -     not subordinate their judgment to personal gain and advantage, or be
            unduly influenced by their own interests or by the interests of
            others;

      -     avoid participation in any activity or relationship that constitutes
            a conflict of interest unless that conflict has been completely
            disclosed to affected parties;

      -     avoid participation in any activity or relationship that could
            create the appearance of a conflict of interest;

      -     avoid direct or indirect participation in any investment, interest,
            association, activity or relationship that may impair or appear to
            impair their objectivity;

      -     not use their personal influence or personal relationships
            improperly to influence investment decisions or financial reporting
            by the Company whereby they would benefit personally to the
            detriment of the Company;

      -     not cause the Company to take action, or fail to take action, for
            their individual personal benefit rather than the benefit of the
            Company; and

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      -     not receive, directly or indirectly (such as through a member of the
            Covered Officer's family), improper personal benefits as a result of
            his or her position with the Company.

Any Covered Officer who may be involved in a situation or activity that might be
a conflict of interest or give the appearance of a conflict of interest should
consider reporting such situation or activity using the reporting procedures set
forth in Section 4 of this Code. The Audit Committee will not be responsible for
monitoring or enforcing this conflict of interest policy, but rather each
Covered Officer is responsible for self-compliance with this conflict of
interest policy.

The following list provides examples of some potential conflict of interest
situations that should be reported using the reporting procedures set forth in
Section 4 of this Code; Covered Officers should keep in mind that these examples
are not exhaustive:

      -     service as a director on the board of any public company;

      -     the receipt of any gift in excess of $250 from any company with
            which the Company has current or prospective business dealings;

      -     the receipt of any entertainment from any company with which the
            Company has current or prospective business dealings unless such
            entertainment is business related, reasonable in cost, appropriate
            as to time and place, and not so frequent as to raise any question
            of impropriety;

      -     any ownership interest in, or any consulting or employment
            relationship with, any of the Company's service providers, other
            than its investment adviser, principal underwriter, administrator or
            any affiliated person thereof;

      -     a direct or indirect financial interest in commissions, transaction
            charges or spreads paid by the Company for effecting portfolio
            transactions or for selling or redeeming shares other than an
            interest arising from the Covered Officer's employment, such as
            compensation or equity ownership.

Although typically not presenting an opportunity for improper personal benefit,
conflicts may arise from, or as a result of, the contractual relationship
between the Company and the investment adviser of which a Covered Officer may
also be an officer or an employee. As a result, this Code recognizes that the
Covered Officers may, in the normal course of their duties (whether formally for
the Company or for the adviser, or for both), be involved in establishing
policies and implementing decisions that will have different effects on the
adviser and the Company. The participation of such Covered Officers in such
activities is inherent in the contractual relationship between the Company and
the adviser and is consistent with the performance by the Covered Officers of
their duties as officers of the Company. Thus, if performed in conformity with
the provisions of the Investment Company Act and the Investment Advisers Act of
1940, as amended (the "Investment Advisers Act"), such activities will be deemed
to have been handled ethically. Other conflicts of interest are covered by this
Code, even if such conflicts of interest are not subject to provisions in the
Investment Company Act and the Investment Advisers Act.

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c.    PREPARATION OF FINANCIAL STATEMENTS

Covered Officers must not knowingly make any misrepresentations regarding the
Company's financial statements or any facts in the preparation of the Company's
financial statements, and must comply with all applicable laws, standards,
principles, guidelines, rules and regulations in the preparation of the
Company's financial statements. This section is intended to prohibit:

      -     making, or permitting or directing another to make, materially false
            or misleading entries in the Company's financial statements or
            records;

      -     failing to correct the Company's financial statements or records
            that are materially false or misleading when he or she has the
            authority to record an entry; and

      -     signing, or permitting or directing another to sign, a document
            containing materially false or misleading financial information.

Covered Officers must be scrupulous in their application of generally accepted
accounting principles. No Covered Officer may (i) express an opinion or state
affirmatively that the financial statements or other financial data of the
Company are presented in conformity with generally accepted accounting
principles, or (ii) state that he or she is not aware of any material
modifications that should be made to such statements or data in order for them
to be in conformity with generally accepted accounting principles, if such
statements or data contain any departure from generally accepted accounting
principles then in effect in the United States.

Covered Officers must follow the laws, standards, principles, guidelines, rules
and regulations established by all applicable governmental bodies, commissions
or other regulatory agencies in the preparation of financial statements, records
and related information. If a Covered Officer prepares financial statements,
records or related information for purposes of reporting to such bodies,
commissions or regulatory agencies, the Covered Officer must follow the
requirements of such organizations in addition to generally accepted accounting
principles.

If a Covered Officer and his or her supervisor have a disagreement or dispute
relating to the preparation of financial statements or the recording of
transactions, the Covered Officer should take the following steps to ensure that
the situation does not constitute an impermissible subordination of judgment:

      -     The Covered Officer should consider whether (i) the entry or the
            failure to record a transaction in the records, or (ii) the
            financial statement presentation or the nature or omission of
            disclosure in the financial statements, as proposed by the
            supervisor, represents the use of an acceptable alternative and does
            not materially misrepresent the facts or result in an omission of a
            material fact. If, after appropriate research or consultation, the
            Covered Officer concludes that the matter has authoritative support
            and/or does not result in a material misrepresentation, the Covered
            Officer need do nothing further.

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      -     If the Covered Officer concludes that the financial statements or
            records could be materially misstated as a result of the
            supervisor's determination, the Covered Officer should follow the
            reporting procedures set forth in Section 4 of this Code.

d.    OBLIGATIONS TO THE INDEPENDENT AUDITOR OF THE COMPANY

In dealing with the Company's independent auditor, Covered Officers must be
candid and not knowingly misrepresent facts or knowingly fail to disclose
material facts, and must respond to specific inquiries and requests by the
Company's independent auditor.

Covered Officers must not take any action, or direct any person to take any
action, to fraudulently influence, coerce, manipulate or mislead the Company's
independent auditor in the performance of an audit of the Company's financial
statements for the purpose of rendering such financial statements materially
misleading.

2.    FULL, FAIR, ACCURATE, TIMELY AND UNDERSTANDABLE DISCLOSURE

It is the Company's policy to provide full, fair, accurate, timely, and
understandable disclosure in reports and documents that the Company files with,
or submits to, the SEC and in any other public communications by the Company.
The Company has designed and implemented Disclosure Controls and Procedures to
carry out this policy.

Covered Officers are expected to use their best efforts to promote, facilitate,
and prepare full, fair, accurate, timely, and understandable disclosure in all
reports and documents that the Company files with, or submits to, the SEC and in
any other public communications by the Company.

Covered Officers must review the Company's Disclosure Controls and Procedures to
ensure they are aware of and carry out their duties and responsibilities in
accordance with the Disclosure Controls and Procedures and the public reporting
obligations of the Company. Covered Officers are responsible for monitoring the
integrity and effectiveness of the Company's Disclosure Controls and Procedures.

3.    COMPLIANCE WITH APPLICABLE LAWS, RULES AND REGULATIONS

Covered Officers are expected to know, respect and comply with all laws, rules
and regulations applicable to the conduct of the Company's business. If a
Covered Officer is in doubt about the legality or propriety of an action,
business practice or policy, the Covered Officer should seek advice from the
Covered Officer's supervisor or the Company's legal counsel.

In the performance of their work, Covered Officers must not knowingly be a party
to any illegal activity or engage in acts that are discreditable to the Company.

Covered Officers are expected to promote the Company's compliance with
applicable laws, rules and regulations. To promote such compliance, Covered
Officers may establish and maintain mechanisms to educate employees carrying out
the finance and compliance functions of the

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Company about any applicable laws, rules or regulations that affect the
operation of the finance and compliance functions and the Company generally.

4.    REPORTING OF ILLEGAL OR UNETHICAL BEHAVIOR

Covered Officers should promptly report any conduct or actions by a Covered
Officer that do not comply with the law or with this Code, failure to do so is
itself a violation of this Code. Covered Officers and the Company shall adhere
to the following reporting procedures:

      -     Any Covered Officer who questions whether a situation, activity or
            practice is acceptable must immediately report such practice to the
            Principal Executive Officer of the Company (or to a Covered Officer
            who is the functional equivalent of this position) or to the
            Company's legal counsel. The person receiving the report shall
            consider the matter and respond to the Covered Officer within a
            reasonable amount of time.

      -     If the Covered Officer is not satisfied with the response of the
            Principal Executive Officer or counsel, the Covered Officer must
            report the matter to the Chairman of the Audit Committee. If the
            Chairman is unavailable, the Covered Officer may report the matter
            to any other member of the Audit Committee. The person receiving the
            report shall consider the matter, refer it to the full Audit
            Committee if he or she deems appropriate, and respond to the Covered
            Officer within a reasonable amount of time.

      -     If, after receiving a response, the Covered Officer concludes that
            appropriate action was not taken, he or she should consider any
            responsibility that may exist to communicate to third parties, such
            as regulatory authorities or the Company's independent auditor. In
            this matter, the Covered Officer may wish to consult with his or her
            own legal counsel.

      -     The Audit Committee and the Company will not be responsible for
            monitoring or enforcing this reporting of violations policy, but
            rather each Covered Officer is responsible for self-compliance with
            this reporting of violations policy.

      -     To the extent possible and as allowed by law, reports will be
            treated as confidential.

      -     If the Audit Committee determines that a Covered Officer violated
            this Code, failed to report a known or suspected violation of this
            Code, or provided intentionally false or malicious information in
            connection with an alleged violation of this Code, the Company may
            take disciplinary action against any such Covered Officer to the
            extent the Audit Committee deems appropriate. No Covered Officer
            will be disciplined for reporting a concern in good faith.

      -     The Company and the Audit Committee may report violations of the law
            to the appropriate authorities.

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5.    ACCOUNTABILITY AND APPLICABILITY

All Covered Officers will be held accountable for adherence to this Code. On an
annual basis, within 30 days of the beginning of each calendar year, each
Covered Officer shall certify in writing his or her receipt, familiarity and
commitment to compliance with this Code, by signing the Acknowledgment Form
(Appendix A to this Code). Covered Officers will not retaliate against any other
Covered Officer or any employee of the Company or their affiliated persons for
reports of potential violations that are made in good faith.

This Code is applicable to all Covered Officers, regardless of whether such
persons are employed by the Company or a third party. If a Covered Officer is
aware of a person ("Potential Officer") who may be considered a Covered Officer
as defined by this Code, the Covered Officer should inform legal counsel to the
Company of such Potential Officer so that a determination can be made regarding
whether such Potential Officer has completed or should complete an
Acknowledgment Form. However, the absence of such a determination will not be
deemed to relieve any person of his or her duties under this Code.

6.    DISCLOSURE OF THIS CODE

This Code shall be disclosed by at least one of the following methods in the
manner prescribed by the SEC, unless otherwise required by law:

      -     by filing a copy of the Code with the SEC;

      -     by posting the text of the Code on the Company's website; or

      -     by providing, without charge, a copy of the Code to any person upon
            request.

7.    WAIVERS

Any waiver of this Code, including an implicit waiver, that has been granted to
a Covered Officer, may be made only by the Board or a committee of the Board to
which such responsibility has been delegated, and must be disclosed by the
Company in the manner prescribed by law and as set forth above in Section 6
(Disclosure of this Code).

8.    AMENDMENTS

This Code may be amended by the affirmative vote of a majority of the Board. Any
amendment of this Code, must be disclosed by the Company in the manner
prescribed by law and as set forth above in Section 6 (Disclosure of this Code),
unless such amendment is deemed to be technical, administrative, or otherwise
non-substantive. Any amendments to this Code will be provided to the Covered
Officers.

*       *       *

[Approved by the Board of Directors on July 12, 2004.]

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APPENDIX A

KAYNE ANDERSON MLP INVESTMENT COMPANY (THE "COMPANY")

CERTIFICATION AND ACKNOWLEDGMENT OF RECEIPT OF SUPPLEMENTAL ANTIFRAUD CODE OF
ETHICS FOR PRINCIPAL OFFICERS AND SENIOR FINANCIAL OFFICERS

I acknowledge and certify that I have received a copy of the Company's
Supplemental Antifraud Code of Ethics for Principal Officers and Senior
Financial Officers (the "Code"). I understand and agree that it is my
responsibility to read and familiarize myself with the policies and procedures
contained in the Code and to abide by those policies and procedures.

I acknowledge my commitment to comply with the Code.

________________________________________     ____________________________
Officer Name (Please Print)                  Officer Signature

                                             ____________________________
                                             Date