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): April 24, 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 April 24, 2007, Harleysville Group Inc. issued a press release
reporting its results for the first quarter of 2007 (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 First Quarter
2007 Results" dated April 24, 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
April 24, 2007                         ----------------------------
                                         Arthur E. Chandler
                                         Senior Vice President and
                                         Chief Financial Officer

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

Exhibit No.       Description

99.1              Press release dated April 24, 2007 of Harleysville
                  Group Inc. (furnished pursuant to Item 2.02 hereof).