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, 2010

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:    Martin F. Hollenbeck
Title:   Chief Investment Officer
Phone:   (513) 870-2000

Signature, Place and Date of Signing:

     /s/ Martin F. Hollenbeck       Fairfield, Ohio         May 7, 2010
     ------------------------       ---------------         -----------


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:

No.      File No.    Name
01       28-10753    The Cincinnati Insurance Company
02       28-10754    The Cincinnati Life Insurance Company
03       28-10755    The Cincinnati Casualty Company
04       28-10756    The Cincinnati Indemnity Company
05       28-12741    The Cincinnati Specialty Underwriters Insurance Company

FORM 13F SUMMARY PAGE Report Summary: Number of Other Included Managers 0 ------- Form 13F Information Table Entry Total: 59 ------- Form 13F Information Table Value Total 716,642 ------- (thousands) List of Other Included Managers: None

Column 2 Column 3 Column 4 Column 5 Column 6 Column 7 Column 8 Issuer Title of Class Cusip FMV (000) Shares SH Investment Oth Mgrs Sole Shared None /Principal /PRN Dis 3M CO COMMON 88579Y101 12,536 150,000 SH SOLE 150,000 - - ABBOTT LABORATORIES COMMON 002824100 11,474 217,800 SH SOLE 217,800 - - AGL RESOURCES INC COMMON 001204106 24,581 635,997 SH SOLE 635,997 - - AMERIGAS PARTNERS-LP COMMON 030975106 168 4,200 SH SOLE 4,200 - - AT&T INC COMMON 00206R102 14,005 542,000 SH SOLE 542,000 - - BAXTER INTERNATIONAL INC COMMON 071813109 13,677 235,000 SH SOLE 235,000 - - BEST BUY CO INC COMMON 086516101 19,670 462,400 SH SOLE 462,400 - - BOARDWALK PIPELINE PARTNERS COMMON 096627104 211 7,100 SH SOLE 7,100 - - BUCKEYE PARTNERS LP COMMON 118230101 384 6,400 SH SOLE 6,400 - - CHEVRON CORP COMMON 166764100 25,176 332,000 SH SOLE 332,000 - - CLOROX COMPANY COMMON 189054109 19,279 300,573 SH SOLE 300,573 - - COLGATE-PALMOLIVE CO COMMON 194162103 24,981 293,000 SH SOLE 293,000 - - CONOCOPHILLIPS COMMON 20825C104 5,117 100,000 SH SOLE 100,000 - - COPANO ENERGY LLC-UNITS COMMON 217202100 160 6,600 SH SOLE 6,600 - - DOVER CORP COMMON 260003108 36,502 780,800 SH SOLE 780,800 - - DUKE ENERGY CORP COMMON 26441C105 20,498 1,256,000 SH SOLE 1,256,000 - - EMERSON ELECTRIC CO COMMON 291011104 13,685 271,845 SH SOLE 271,845 - - ENBRIDGE ENERGY PARTNERS LP COMMON 29250R106 480 9,500 SH SOLE 9,500 - - ENERGY TRANSFER EQUITY LP COMMON 29273V100 503 14,900 SH SOLE 14,900 - - ENERGY TRANSFER PARTNERS LP COMMON 29273R109 684 14,600 SH SOLE 14,600 - - ENTERPRISE GP HOLDINGS COMMON 293716106 172 4,000 SH SOLE 4,000 - - ENTERPRISE PRODUCTS PARTNERS COMMON 293792107 1,850 53,500 SH SOLE 53,500 - - GENUINE PARTS CO COMMON 372460105 34,764 823,000 SH SOLE 823,000 - - HONEYWELL INTERNATIONAL INC COMMON 438516106 42,893 947,500 SH SOLE 947,500 - - INERGY LP COMMON 456615103 268 7,100 SH SOLE 7,100 - - INTL BUSINESS MACHINES CORP COMMON 459200101 21,803 170,000 SH SOLE 170,000 - - JOHNSON & JOHNSON COMMON 478160104 27,710 425,000 SH SOLE 425,000 - - KINDER MORGAN ENERGY PRTNRS COMMON 494550106 1,583 24,200 SH SOLE 24,200 - - LINEAR TECHNOLOGY CORP COMMON 535678106 22,436 794,200 SH SOLE 794,200 - - LINN ENERGY LLC-UNITS COMMON 536020100 424 16,500 SH SOLE 16,500 - - MAGELLAN MIDSTREAM PARTNERS COMMON 559080106 661 13,900 SH SOLE 13,900 - - MARKWEST ENERGY PARTNERS LP COMMON 570759100 233 7,600 SH SOLE 7,600 - - MCDONALD'S CORP COMMON 580135101 29,866 447,638 SH SOLE 447,638 - - MEDTRONIC INC COMMON 585055106 31,059 689,750 SH SOLE 689,750 - - MEDTRONIC INC CONVERTIBLE DEB 585055AM8 2,485 2,350,000 PRN SOLE - - - MEDTRONIC INC CONVERTIBLE DEB 585055AK2 2,009 1,900,000 PRN SOLE - - - MERIDIAN BIOSCIENCE INC COMMON 589584101 15,889 780,000 SH SOLE 780,000 - - MICROCHIP TECHNOLOGY INC COMMON 595017104 17,178 610,000 SH SOLE 610,000 - - MICROSOFT CORP COMMON 594918104 25,919 885,000 SH SOLE 885,000 - - NUSTAR ENERGY LP COMMON 67058H102 381 6,300 SH SOLE 6,300 - - ONEOK PARTNERS LP COMMON 68268N103 423 6,900 SH SOLE 6,900 - - PAYCHEX INC COMMON 704326107 24,576 800,000 SH SOLE 800,000 - - PEPSICO INC COMMON 713448108 50,249 759,500 SH SOLE 759,500 - - PFIZER INC COMMON 717081103 6,757 394,000 SH SOLE 394,000 - - PIEDMONT NATURAL GAS CO COMMON 720186105 10,052 364,480 SH SOLE 364,480 - - PLAINS ALL AMER PIPELINE LP COMMON 726503105 808 14,200 SH SOLE 14,200 - - PRAXAIR INC COMMON 74005P104 8,300 100,000 SH SOLE 100,000 - - PROCTER & GAMBLE CO/THE COMMON 742718109 3,157 49,900 SH SOLE 49,900 - - REGENCY ENERGY PARTNERS LP COMMON 75885Y107 182 8,300 SH SOLE 8,300 - - RICHARDSON ELECTRONICS CONVERTIBLE DEB 763165AD9 1,644 1,644,000 PRN SOLE - - - RPM INTERNATIONAL INC COMMON 749685103 17,600 824,725 SH SOLE 824,725 - - SPECTRA ENERGY CORP COMMON 847560109 1,757 78,000 SH SOLE 78,000 - - STAPLES INC COMMON 855030102 18,335 783,293 SH SOLE 783,293 - - SUBURBAN PROPANE PARTNERS LP COMMON 864482104 209 4,400 SH SOLE 4,400 - - SUNOCO LOGISTICS PARTNERS LP COMMON 86764L108 164 2,400 SH SOLE 2,400 - - SYSCO CORP COMMON 871829107 27,542 933,613 SH SOLE 933,613 - - TC PIPELINES LP COMMON 87233Q108 141 3,700 SH SOLE 3,700 - - VERIZON COMMUNICATIONS INC COMMON 92343V104 21,177 682,700 SH SOLE 682,700 - - WILLIAMS PARTNERS LP COMMON 96950F104 213 5,300 SH SOLE 5,300 - - 716,642

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