UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 13F FORM 13F COVER PAGE Report for the Calendar Year or Quarter Ended: June 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 August 5, 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: 3,926,348 ----------- List of Other Included Managers: 01 Cincinnati Financial Corporation 13F File No. ----------- 2

COLUMN 2 COLUMN 3 COLUMN 4 COLUMN 5 SH/PRN PUT/CALL ISSUER TITLE OF CLASS CUSIP FMV (000) SHARES ALLIANCE CAPITAL MGMT HLDG LTD PART COMMON 01855A101 95,752 2,048,600 SH ALLTEL CORP COMMON 020039103 266,316 4,276,110 SH BB & T CORP COMMON 054937107 7,546 188,800 SH CAMDEN PROPERTY TRUST COMMON 133131102 5,375 100,000 SH CHEVRON CORPORATION COMMON 166764100 40,039 716,000 SH CINERGY CORP COMMON 172474108 47,285 1,055,000 SH COMMERCIAL NET LEASE REALTY COMMON 202218103 5,425 265,000 SH CONOCOPHILLIPS COMMON 20825C104 20,122 350,000 SH DEVELOPERS DIVERSIFIED REALTY COMMON 251591103 2,298 50,000 SH EQUITABLE RESOURCES INC COMMON 294549100 20,400 300,000 SH EXXON MOBIL CORPORATION COMMON 30231G102 363,210 6,320,000 SH FIFTH THIRD BANCORP COMMON 316773100 1,775,924 43,136,352 SH FIRST FINANCIAL BANCORP COMMON 320209109 1,712 90,586 SH FORTUNE BRANDS INC COMMON 349631101 24,420 275,000 SH GENERAL ELECTRIC CO. COMMON 369604103 28,586 825,000 SH GENUINE PARTS CO COMMON 372460105 23,421 570,000 SH GLIMCHER REALTY TRUST COMMON 379302102 2,775 100,000 SH HILLENBRAND INDUSTRIES COMMON 431573104 29,137 576,400 SH HUNTINGTON BANCSHARES INC COMMON 446150104 1,540 63,800 SH JEFFERSON PILOT CORP COMMON 475070108 6,303 125,000 SH JOHNSON & JOHNSON COMMON 478160104 91,000 1,400,000 SH LINCOLN NATIONAL CORP COMMON 534187109 10,022 213,600 SH MEDTRONIC INC COMMON 585055106 10,358 200,000 SH NATIONAL CITY CORPORATION COMMON 635405103 239,693 7,025,000 SH NEW PLAN EXCEL RLTY TRUST INC COMMON 648053106 11,822 435,095 SH OFFICEMAX INC COMMON 67622P101 934 31,378 SH PNC FINANCIAL SERVICES GROUP COMMON 693475105 98,573 1,810,000 SH PFIZER INC COMMON 717081103 3,861 140,000 SH PIEDMONT NATURAL GAS COMMON 720186105 71,724 2,986,000 SH PROCTER & GAMBLE CORPORATION COMMON 742718109 244,233 4,630,000 SH SIMON PROPERTY GROUP INC COMMON 828806109 14,498 200,000 SH SKY FINANCIAL GROUP INC COMMON 83080P103 26,068 925,050 SH SYSCO CORP COMMON 871829107 253 7,000 SH TANGER FCTRY OUTLET COMMON 875465106 10,944 406,400 SH U S BANCORP COMMON 902973304 88,742 3,039,120 SH WACHOVIA CORP. COMMON 929903102 2,480 50,000 SH WELLS FARGO & CO COMMON 949746101 85,134 1,382,500 SH WYETH COMMON 983024100 146,183 3,285,000 SH PARTNERRE LTD COMMON G6852T105 2,241 34,784 SH 3,926,348 89,632,575 3

COLUMN 6 COLUMN 7 COLUMN 8 ISSUER INVESTMENT DIS OTH MGRS SOLE SHARED NONE ALLIANCE CAPITAL MGMT HLDG LTD PART SHARED 01 - 2,048,600 - ALLTEL CORP SHARED 01 - 4,276,110 - BB & T CORP SHARED 01 - 188,800 - CAMDEN PROPERTY TRUST SHARED 01 - 100,000 - CHEVRON CORPORATION SHARED 01 - 716,000 - CINERGY CORP SHARED 01 - 1,055,000 - COMMERCIAL NET LEASE REALTY SHARED 01 - 265,000 - CONOCOPHILLIPS SHARED 01 - 350,000 - DEVELOPERS DIVERSIFIED REALTY SHARED 01 - 50,000 - EQUITABLE RESOURCES INC SHARED 01 - 300,000 - EXXON MOBIL CORPORATION SHARED 01 - 6,320,000 - FIFTH THIRD BANCORP SHARED 01 - 43,136,352 - FIRST FINANCIAL BANCORP SHARED 01 - 90,586 - FORTUNE BRANDS INC SHARED 01 - 275,000 - GENERAL ELECTRIC CO. SHARED 01 - 825,000 - GENUINE PARTS CO SHARED 01 - 570,000 - GLIMCHER REALTY TRUST SHARED 01 - 100,000 - HILLENBRAND INDUSTRIES SHARED 01 - 576,400 - HUNTINGTON BANCSHARES INC SHARED 01 - 63,800 - JEFFERSON PILOT CORP SHARED 01 - 125,000 - JOHNSON & JOHNSON SHARED 01 - 1,400,000 - LINCOLN NATIONAL CORP SHARED 01 - 213,600 - MEDTRONIC INC SHARED 01 - 200,000 - NATIONAL CITY CORPORATION SHARED 01 - 7,025,000 - NEW PLAN EXCEL RLTY TRUST INC SHARED 01 - 435,095 - OFFICEMAX INC SHARED 01 - 31,378 - PNC FINANCIAL SERVICES GROUP SHARED 01 - 1,810,000 - PFIZER INC SHARED 01 - 140,000 - PIEDMONT NATURAL GAS SHARED 01 - 2,986,000 - PROCTER & GAMBLE CORPORATION SHARED 01 - 4,630,000 - SIMON PROPERTY GROUP INC SHARED 01 - 200,000 - SKY FINANCIAL GROUP INC SHARED 01 - 925,050 - SYSCO CORP SHARED 01 - 7,000 - TANGER FCTRY OUTLET SHARED 01 - 406,400 - U S BANCORP SHARED 01 - 3,039,120 - WACHOVIA CORP. SHARED 01 - 50,000 - WELLS FARGO & CO SHARED 01 - 1,382,500 - WYETH SHARED 01 - 3,285,000 - PARTNERRE LTD SHARED 01 - 34,784 - 89,632,575

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