UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 13F FORM 13F COVER PAGE Report for the Calendar Year or Quarter Ended: March 31, 2006 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 Financial Corporation Address: 6200 South Gilmore Road Fairfield, Ohio 45014 13F File Number: 028-10798 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 May 8, 2006 - ------------------------------------- Report Type (Check only one.): [ ] 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).) [X] 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: Cincinnati Insurance Company 13F File No. 28-10753 Cincinnati Casualty Company 13F File No. 28-10755 Cincinnati Indemnity Company 13F File No. 28-10756 Cincinnati Life Insurance Company 13F File No. 28-10754 CinFin Capital Management 13F File No. 28-5597 1

FORM 13F SUMMARY PAGE Report Summary: Number of Other Included Managers 0 Form 13F Information Table Entry Total: 30 Form 13F Information Table Value Total 2,228,226 List of Other Included Managers: None 2

COLUMN 2 COLUMN 3 COLUMN 4 COLUMN 5 ISSUER TITLE OF CLASS CUSIP FMV (000) SHARES SH/PRN PUT/CALL ------ -------------- --------- ---------- ---------- ------ -------- ARCHSTONE-SMITH TRUST COMMON 039583109 3,682 75,500 SH BB & T CORP COMMON 054937107 8,820 225,000 SH CHEVRON CORPORATION COMMON 166764100 19,246 332,000 SH CINERGY CORP COMMON 172474108 4,541 100,000 SH CONOCOPHILLIPS COMMON 20825C104 6,315 100,000 SH EXXON MOBIL CORPORATION COMMON 30231G102 98,232 1,614,066 SH FIFTH THIRD BANCORP COMMON 316773100 1,069,947 27,183,604 SH FIRST FINANCIAL BANCORP COMMON 320209109 41,028 2,465,644 SH FIRST MERIT CORPORATION COMMON 337915102 129,465 5,250,000 SH FORTUNE BRANDS INC COMMON 349631101 52,635 652,792 SH GENERAL ELECTRIC CO. COMMON 369604103 17,390 500,000 SH GENUINE PARTS CO COMMON 372460105 311 7,100 SH HUNTINGTON BANCSHARES INC COMMON 446150104 3,287 136,200 SH JEFFERSON PILOT CORP COMMON 475070108 4,196 75,000 SH JOHNSON & JOHNSON COMMON 478160104 72,071 1,217,000 SH LINCOLN NATIONAL CORP COMMON 534187109 2,730 50,000 SH MEDTRONIC INC COMMON 585055106 35,005 689,750 SH MICROSOFT CORP COMMON 594918104 21,360 785,000 SH NATIONAL CITY CORPORATION COMMON 635405103 31,410 900,000 SH PEOPLES COMMUNITY BANCORP COMMON 71086E107 2,045 100,000 SH PFIZER INC COMMON 717081103 28,035 1,125,000 SH PIEDMONT NATURAL GAS COMMON 720186105 63,055 2,628,400 SH PNC FINANCIAL SERVICES GROUP COMMON 693475105 178,439 2,651,000 SH PROCTER & GAMBLE CORPORATION COMMON 742718109 56,301 976,940 SH SKY FINANCIAL GROUP INC COMMON 83080P103 90,764 3,425,068 SH SYSCO CORP COMMON 871829107 14,999 468,000 SH U S BANCORP COMMON 902973304 96,005 3,147,700 SH WACHOVIA CORP. COMMON 929903102 27,167 484,700 SH WELLS FARGO & CO COMMON 949746101 30,338 475,000 SH WYETH COMMON 983024100 19,408 400,000 SH 2,228,226 58,240,464 3

COLUMN 6 COLUMN 7 COLUMN 8 ISSUER INVESTMENT DIS OTH MGRS SOLE SHARED NONE ------ -------------- -------- ---------- ------ ---- ARCHSTONE-SMITH TRUST SOLE 75,500 - - BB & T CORP SOLE 225,000 - - CHEVRON CORPORATION SOLE 332,000 - - CINERGY CORP SOLE 100,000 - - CONOCOPHILLIPS SOLE 100,000 - - EXXON MOBIL CORPORATION SOLE 1,614,066 - - FIFTH THIRD BANCORP SOLE 27,183,604 - - FIRST FINANCIAL BANCORP SOLE 2,465,644 - - FIRST MERIT CORPORATION SOLE 5,250,000 - - FORTUNE BRANDS INC SOLE 652,792 - - GENERAL ELECTRIC CO. SOLE 500,000 - - GENUINE PARTS CO SOLE 7,100 - - HUNTINGTON BANCSHARES INC SOLE 136,200 - - JEFFERSON PILOT CORP SOLE 75,000 - - JOHNSON & JOHNSON SOLE 1,217,000 - - LINCOLN NATIONAL CORP SOLE 50,000 - - MEDTRONIC INC SOLE 689,750 - - MICROSOFT CORP SOLE 785,000 - - NATIONAL CITY CORPORATION SOLE 900,000 - - PEOPLES COMMUNITY BANCORP SOLE 100,000 - - PFIZER INC SOLE 1,125,000 - - PIEDMONT NATURAL GAS SOLE 2,628,400 - - PNC FINANCIAL SERVICES GROUP SOLE 2,651,000 - - PROCTER & GAMBLE CORPORATION SOLE 976,940 - - SKY FINANCIAL GROUP INC SOLE 3,425,068 - - SYSCO CORP SOLE 468,000 - - U S BANCORP SOLE 3,147,700 - - WACHOVIA CORP. SOLE 484,700 - - WELLS FARGO & CO SOLE 475,000 - - WYETH SOLE 400,000 - - 58,240,464 4

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