UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 13F FORM 13F COVER PAGE Report for the Calendar Year or Quarter Ended: September 30, 2005 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: Cincinnati Insurance Company Address: 6200 South Gilmore Road Fairfield, Ohio 45014 13F File Number: 028-10753 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 form. Person Signing the Report on Behalf of Reporting Manager: Name: Kenneth S. Miller Title: Sr. Vice President Phone: (513) 870-2633 Signature, Place and Date of Signing: /s/Kenneth S. Miller Fairfield, Ohio October 24, 2005 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: N/A 1

FORM 13F SUMMARY PAGE Report Summary: Number of Other Included Managers 1 Form 13F Information Table Entry Total: 39 Form 13F Information Table Value Total: 3,852,452 List of Other Included Managers: 01 Cincinnati Financial Corporation 13F File No.____________ 2

FORM 13F INFORMATION TABLE - ------------------------------------------------------------------------------------------------------------------------------------ COLUMN 8 COLUMN 1 COLUMN 2 COLUMN 3 COLUMN 4 COLUMN 5 COLUMN 6 COLUMN 7 VOTING AUTHORITY - ------------------------------------------------------------------------------------------------------------------------------------ NAME OF TITLE OF VALUE SHRS OR SH/ PUT/ INVESTMENT OTHER ISSUER CLASS CUSIP [x$1000] PRN AMT PRN CALL DISCRETION MANAGERS SOLE SHARED NONE - ------------------------------------------------------------------------------------------------------------------------------------ ACCO BRANDS CORP COMMON 00081T108 1,824 64,629 SH SHARED 01 -- 64,629 -- ALLIANCE CAPITAL MGMT HLDG LTD PART COMMON 01855A101 98,026 2,048,600 SH SHARED 01 -- 2,048,600 -- ALLTEL CORP COMMON 020039103 278,418 4,276,110 SH SHARED 01 -- 4,276,110 -- BB & T CORP COMMON 054937107 7,373 188,800 SH SHARED 01 -- 188,800 -- CAMDEN PROPERTY TRUST COMMON 133131102 5,575 100,000 SH SHARED 01 -- 100,000 -- CHEVRON CORPORATION COMMON 166764100 46,347 716,000 SH SHARED 01 -- 716,000 -- CINERGY CORP COMMON 172474108 46,853 1,055,000 SH SHARED 01 -- 1,055,000 -- COMMERCIAL NET LEASE REALTY COMMON 202218103 5,300 265,000 SH SHARED 01 -- 265,000 -- CONOCOPHILLIPS COMMON 20825C104 24,469 350,000 SH SHARED 01 -- 350,000 -- DEVELOPERS DIVERSIFIED REALTY COMMON 251591103 2,335 50,000 SH SHARED 01 -- 50,000 -- EQUITABLE RESOURCES INC COMMON 294549100 23,436 600,000 SH SHARED 01 -- 600,000 -- EXXON MOBIL CORPORATION COMMON 30231G102 401,573 6,320,000 SH SHARED 01 -- 6,320,000 -- FIFTH THIRD BANCORP COMMON 316773100 1,585,261 43,136,352 SH SHARED 01 -- 43,136,352 -- FIRST FINANCIAL BANCORP COMMON 320209109 1,686 90,586 SH SHARED 01 -- 90,586 -- FORTUNE BRANDS INC COMMON 349631101 24,806 305,000 SH SHARED 01 -- 305,000 -- GENERAL ELECTRIC CO. COMMON 369604103 32,828 975,000 SH SHARED 01 -- 975,000 -- GENUINE PARTS CO COMMON 372460105 24,453 570,000 SH SHARED 01 -- 570,000 -- GLIMCHER REALTY TRUST COMMON 379302102 2,447 100,000 SH SHARED 01 -- 100,000 -- HILLENBRAND INDUSTRIES COMMON 431573104 27,120 576,400 SH SHARED 01 -- 576,400 -- HUNTINGTON BANCSHARES INC COMMON 446150104 1,434 63,800 SH SHARED 01 -- 63,800 -- JEFFERSON PILOT CORP COMMON 475070108 6,396 125,000 SH SHARED 01 -- 125,000 -- JOHNSON & JOHNSON COMMON 478160104 93,338 1,475,000 SH SHARED 01 -- 1,475,000 -- LINCOLN NATIONAL CORP COMMON 534187109 11,111 213,600 SH SHARED 01 -- 213,600 -- MEDTRONIC INC COMMON 585055106 10,724 200,000 SH SHARED 01 -- 200,000 -- NATIONAL CITY CORPORATION COMMON 635405103 234,916 7,025,000 SH SHARED 01 -- 7,025,000 -- NEW PLAN EXCEL RLTY TRUST INC COMMON 648053106 9,985 435,095 SH SHARED 01 -- 435,095 -- PNC FINANCIAL SERVICES GROUP COMMON 693475105 105,016 1,810,000 SH SHARED 01 -- 1,810,000 -- PFIZER INC COMMON 717081103 3,496 140,000 SH SHARED 01 -- 140,000 -- PIEDMONT NATURAL GAS COMMON 720186105 75,158 2,986,000 SH SHARED 01 -- 2,986,000 -- PROCTER & GAMBLE CORPORATION COMMON 742718109 275,300 4,630,000 SH SHARED 01 -- 4,630,000 -- SIMON PROPERTY GROUP INC COMMON 828806109 14,824 200,000 SH SHARED 01 -- 200,000 -- SKY FINANCIAL GROUP INC COMMON 83080P103 26,003 925,050 SH SHARED 01 -- 925,050 -- SYSCO CORP COMMON 871829107 220 7,000 SH SHARED 01 -- 7,000 -- TANGER FCTRY OUTLET COMMON 875465106 11,302 406,400 SH SHARED 01 -- 406,400 -- U S BANCORP COMMON 902973304 88,848 3,164,120 SH SHARED 01 -- 3,164,120 -- WACHOVIA CORP. COMMON 929903102 9,056 190,300 SH SHARED 01 -- 190,300 -- WELLS FARGO & CO COMMON 949746101 80,973 1,382,500 SH SHARED 01 -- 1,382,500 -- WYETH COMMON 983024100 151,997 3,285,000 SH SHARED 01 -- 3,285,000 -- PARTNERRE LTD COMMON G6852T105 2,228 34,784 SH SHARED 01 -- 34,784 -- 3,852,452 90,486,126 90,486,126 3

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