UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM 8-K

                                 CURRENT REPORT

     Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

       Date of Report (Date of earliest event reported): February 21, 2007
                                                         -----------------

                             HARLEYSVILLE GROUP INC.
             -------------------------------------------------------
             (Exact name of registrant as specified in its charter)


          Delaware                    0-14697             51-0241172
- ---------------------------           --------            ----------
(State or other jurisdiction         (Commission         (IRS Employer
    of incorporation)                File Number)       Identification No.)


355 Maple Avenue, Harleysville, Pennsylvania               19438
- ------------------------------------------------          ---------
   (Address of principal executive offices)               (Zip Code)

                                 (215) 256-5000
               ---------------------------------------------------
               Registrant's telephone number, including area code

                                 Not Applicable
     ----------------------------------------------------------------------
         (Former name or former address, if changed since last report.)

Check  the  appropriate  box  below  if the  Form  8-K  filing  is  intended  to
simultaneously  satisfy the filing obligation of the registrant under any of the
following provisions:

[_]  Written communications pursuant to Rule 425 under the Securities Act (17
     CFR 230.425)

[_]  Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR
     240.14a-12)

[_]  Pre-commencement communications pursuant to Rule 14d-2(b) under the
     Exchange Act (17 CFR 240.14d-2(b))

[_]  Pre-commencement communications pursuant to Rule 13e-4(c) under the
     Exchange Act (17 CFR 240.13e-4c)

ITEM 2.02 RESULTS OF OPERATIONS AND FINANCIAL CONDITION

     On  February  21,  2007,  Harleysville  Group Inc.  issued a press  release
reporting  its  results  for the fourth  quarter and  year-end  2006  (furnished
hereunder as Exhibit 99.1 and incorporated herein).

     The information provided in this Form 8-K, Item 2.02, Results of Operations
and Financial Condition,  is being furnished and shall not be deemed "filed" for
purposes  of  Section  18 of the  Securities  Exchange  Act of  1934  ("Exchange
Act"),or  otherwise  subject to the liabilities of that section,  nor shall such
information  be  deemed  incorporated  by  reference  in any  filing  under  the
Securities  Act of 1933, or the Exchange  Act,  except as shall be expressly set
forth by specific reference in such filing.

     In addition to disclosing  results that are  determined in accordance  with
U.S. generally accepted accounting principles (GAAP), the company also discloses
non-GAAP  information on operating  earnings and its statutory  combined  ratio.
Management  believes  information on operating  earnings and statutory  combined
ratio is useful to investors.  Management has  historically  employed  operating
earnings and statutory combined ratio as valuable measurements of the underlying
profitability  of the  Company's  insurance  operations  since they  exclude the
impact of the Company's investment results.

ITEM 9.01 FINANCIAL STATEMENTS AND EXHIBITS

Exhibit 99.1 Press release "Harleysville Group Reports Record Fourth Quarter and
             Year-end 2006 Results" dated February 21, 2007.


                                   SIGNATURES

     Pursuant to the  requirements  of the Securities  Exchange Act of 1934, the
Registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned hereunto duly authorized.

                                         HARLEYSVILLE GROUP INC.
                                         Registrant

                                          /s/Arthur E. Chandler
February 21, 2007                        ----------------------------
                                         Arthur E. Chandler
                                         Senior Vice President and
                                         Chief Financial Officer

                                  EXHIBIT INDEX
                                  -------------

Exhibit No.                Description
- -----------                -----------
99.1              Press release dated February 21, 2007 of Harleysville
                  Group Inc. (furnished pursuant to Item 2.02 hereof).