- Form 13F Holdings Report (13F-HR)

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

Form 13F
Form 13F COVER PAGE
Report for the Calendar Year or Quarter Ended: 9/30/2011
Check here if Amendment []; Amendment Number: This Amendment (Check only one.): [] is a restatement.
[] adds new holdings entries.

Institutional Investment Manager Filing this Report:

Name: Harleysville Group Inc. Address: 355 Maple Avenue Harleysville, PA 19438-2297

Form 13F File Number: 28- 4718

The institutional investment manager filing this report and the person by whom it is signed hereby represent that the person signing the report is authorized to submit it, that all information contained herein is true, correct and complete, and that it is understood that all required items, statements, schedules, lists, and tables, are considered integral parts of this submission.

Persons Signing this Report on Behalf of Reporting Manager:

Name: Mark R. Cummins Title: Executive Vice President & Treasurer Phone: [phone]

Signature, Place, and Date of Signing:

/s/ Mark R. Cummins Harleysville, PA 11/8/2011 --------------------------------- --------------------------------- ---------- [Signature] [City, State] [Date]

Report Type (Check only one):

[X] 13F HOLDINGS REPORT. (Check here if all holdings of this reporting
manager are reported in this report.)

[ ] 13F NOTICE. (Check here if no holdings reported are in this report,
and all holdings are reported by other reporting manager(s).)

[ ] 13F COMBINATION REPORT. (Check here if a portion of the holdings for
this reporting manager are reported in this report and a portion are
reported by other reporting manager(s).)

List of Other Managers Reporting for this Manager:

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Form 13F SUMMARY PAGE Report Summary: Number of Other Included Managers: 0 Form 13F Information Table Entry Total: 22 Form 13F Information Table Value Total: $ 445,777 -------------- (In Thousands)

List of Other Included Managers:

Provide a numbered list of the name(s) and 13F file number(s) of all institutional investment managers with respect to which this report is filed, other than the manager filing this report.
NONE

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FORM 13F INFORMATION TABLE COLUMN 1 COLUMN 2 COLUMN 3 COLUMN 4 COLUMN 5 COLUMN 6 COLUMN 7 COLUMN 8 ------------------------------------ -------------- --------- -------- ------------------ ---------- -------- ------------------- VALUE SHRS OR SH/ PUT/ INVESTMENT OTHER VOTING AUTHORITY NAME OF ISSUER TITLE OF CLASS CUSIP (x$1000) PRN AMT PRN CALL DISCRETION MANAGERS SOLE SHARED NONE ------------------------------------ -------------- --------- -------- --------- --- ---- ---------- -------- ------- ------ ---- AT&T INC COM 00206R102 5,581 195,700 SH SOLE N/A 5,581 0 0 ABBOTT LABS COM 2824100 6,060 118,500 SH SOLE N/A 6,060 0 0 CHEVRONTEXACO CORP COM 166764100 3,250 35,100 SH SOLE N/A 3,250 0 0 CINCINNATI FINL CORP COM 172062101 4,826 183,275 SH SOLE N/A 4,826 0 0 CONOCOPHILLIPS COM 20825C104 3,133 49,475 SH SOLE N/A 3,133 0 0 CONSOLIDATED EDISON INC COM 209115104 6,529 114,500 SH SOLE N/A 6,529 0 0 DOMINION RES INC VA NEWS COM 25746U109 6,542 128,850 SH SOLE N/A 6,542 0 0 HARLEYSVILLE SAVINGS FINL CO COM 412865107 1,734 123,748 SH SOLE N/A 1,734 0 0 INTEL CORP COM 458140100 5,880 275,600 SH SOLE N/A 5,880 0 0 JOHNSON & JOHNSON COM 478160104 5,688 89,300 SH SOLE N/A 5,688 0 0 KIMBERLY CLARK CORP COM 494368103 6,128 86,300 SH SOLE N/A 6,128 0 0 MCDONALDS CORP COM 580135101 6,384 72,700 SH SOLE N/A 6,384 0 0 PEPSICO INC COM 713448108 2,575 41,600 SH SOLE N/A 2,575 0 0 PFIZER INC COM 717081103 5,693 322,000 SH SOLE N/A 5,693 0 0 PROCTER & GAMBLE CO COM 742718109 2,845 45,030 SH SOLE N/A 2,845 0 0 ROYAL DUTCH SHELL PLC COM 780259206 5,310 86,320 SH SOLE N/A 5,310 0 0 SOUTHERN CO COM 842587107 6,277 148,150 SH SOLE N/A 6,277 0 0 SYSCO CORP COM 871829107 4,903 189,300 SH SOLE N/A 4,903 0 0 XCEL ENERGY INC COM 98389B100 2,901 117,500 SH SOLE N/A 2,901 0 0 VANGUARD INSTL TOTAL STOCK MKT INDX EQUITY MUT FD 922040407 189,641 7,466,174 SH SOLE N/A 189,641 0 0 VANGUARD FTSE ALL WORLD EX U.S. FUND EQUITY MUT FD 922042783 57,183 742,639 SH SOLE N/A 57,183 0 0 VANGUARD VALUE ETF EQUITY MUT FD 922908744 106,714 2,268,103 SH SOLE N/A 106,714 0 0

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