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

                                    FORM 13F

                               FORM 13F COVER PAGE

Report for the Calendar Year or Quarter Ended: December 31, 2009

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

Signature, Place and Date of Signing:

    /s/ Martin F. Hollenbeck        Fairfield, Ohio        February 9, 2010
    ------------------------        ---------------        ----------------

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 55 ----------- Form 13F Information Table Value Total 1,714,622 ----------- (thousands) List of Other Included Managers No. File No. Name 01 028-10798 Cincinnati Financial Corporation 2

Column 2 Column 3 Column 4 Column 5 Column 6 Column 7 Column 8 Title Shares/ SH/ Investment Oth Issuer of Class Cusip FMV (000) Principal PRN Dis Mgrs Sole Shared None 3M CO COMMON 88579Y101 32,944 398,500 SH SHARED-OTHER 01 - 398,500 - ABBOTT LABORATORIES COMMON 002824100 62,477 1,157,200 SH SHARED-OTHER 01 - 1,157,200 - AGL RESOURCES INC COMMON 001204106 26,999 740,300 SH SHARED-OTHER 01 - 740,300 - ALLIANCEBERNSTEIN HOLDING LP COMMON 01881G106 57,566 2,048,600 SH SHARED-OTHER 01 - 2,048,600 - ASPEN INSURANCE CONVERTIBLE PFD G05384113 8,403 160,000 SH SHARED-OTHER 01 - - - AT&T INC COMMON 00206R102 27,553 983,000 SH SHARED-OTHER 01 - 983,000 - AUTOMATIC DATA PROCESSING COMMON 053015103 26,396 616,437 SH SHARED-OTHER 01 - 616,437 - BAXTER INTERNATIONAL INC COMMON 071813109 52,225 890,000 SH SHARED-OTHER 01 - 890,000 - BEST BUY CO INC COMMON 086516101 17,560 445,000 SH SHARED-OTHER 01 - 445,000 - BLACKROCK INC COMMON 09247X101 16,440 70,800 SH SHARED-OTHER 01 - 70,800 - BOSTON PROPERTIES INC CONVERTIBLE DEB 10112RAK0 6,133 6,250,000 PRN SHARED-OTHER 01 - - - CHEVRON CORP COMMON 166764100 76,097 988,400 SH SHARED-OTHER 01 - 988,400 - CLOROX COMPANY COMMON 189054109 27,742 454,792 SH SHARED-OTHER 01 - 454,792 - COLGATE-PALMOLIVE CO COMMON 194162103 12,323 150,000 SH SHARED-OTHER 01 - 150,000 - CONOCOPHILLIPS COMMON 20825C104 17,875 350,000 SH SHARED-OTHER 01 - 350,000 - DOVER CORP COMMON 260003108 17,995 432,480 SH SHARED-OTHER 01 - 432,480 - DUKE ENERGY CORP COMMON 26441C105 33,487 1,945,800 SH SHARED-OTHER 01 - 1,945,800 - EMERSON ELECTRIC CO COMMON 291011104 30,706 720,800 SH SHARED-OTHER 01 - 720,800 - EQT CORP COMMON 26884L109 26,352 600,000 SH SHARED-OTHER 01 - 600,000 - EXXON MOBIL CORP COMMON 30231G102 102,012 1,496,000 SH SHARED-OTHER 01 - 1,496,000 - FERRO CORPORATION CV DEB CONVERTIBLE DEB 315405AL4 4,659 5,250,000 PRN SHARED-OTHER 01 - - - GENUINE PARTS CO COMMON 372460105 43,540 1,147,000 SH SHARED-OTHER 01 - 1,147,000 - HONEYWELL INTERNATIONAL INC COMMON 438516106 11,564 295,000 SH SHARED-OTHER 01 - 295,000 - HUNTINGTON BANCSHARES INC CONVERTIBLE PFD 446150401 8,340 9,754 SH SHARED-OTHER 01 - - - ILLINOIS TOOL WORKS COMMON 452308109 3,945 82,200 SH SHARED-OTHER 01 - 82,200 - INTL BUSINESS MACHINES CORP COMMON 459200101 33,380 255,000 SH SHARED-OTHER 01 - 255,000 - JOHNSON & JOHNSON COMMON 478160104 90,174 1,400,000 SH SHARED-OTHER 01 - 1,400,000 - KEYCORP INC. CONVERTIBLE PFD 493267405 2,805 35,000 SH SHARED-OTHER 01 - - - LEGGETT & PLATT INC COMMON 524660107 31,698 1,553,800 SH SHARED-OTHER 01 - 1,553,800 - LIFE POINT HOSPITALS SR SUB NTS CONVERTIBLE DEB 53219LAG4 4,606 5,000,000 PRN SHARED-OTHER 01 - - - LINEAR TECHNOLOGY CORP COMMON 535678106 23,861 780,800 SH SHARED-OTHER 01 - 780,800 - MCDONALD'S CORP COMMON 580135101 34,592 554,000 SH SHARED-OTHER 01 - 554,000 - MEDTRONIC INC COMMON 585055106 33,436 760,250 SH SHARED-OTHER 01 - 760,250 - MERIDIAN BIOSCIENCE INC COMMON 589584101 17,671 820,000 SH SHARED-OTHER 01 - 820,000 - METLIFE INC COMMON 59156R108 58,547 1,656,206 SH SHARED-OTHER 01 - 1,656,206 - MICROCHIP TECHNOLOGY INC COMMON 595017104 31,287 1,077,000 SH SHARED-OTHER 01 - 1,077,000 - MICROSOFT CORP COMMON 594918104 24,927 817,800 SH SHARED-OTHER 01 - 817,800 - NEW YORK COMMUNITY BANCORP 6% CONVERTIBLE PFD 64944P307 4,418 95,000 SH SHARED-OTHER 01 - - - NORAM ENERGY CORP CV DEB CONVERTIBLE DEB 655419AC3 9,095 9,328,650 PRN SHARED-OTHER 01 - - - NORTHERN TRUST CORP COMMON 665859104 62,188 1,186,800 SH SHARED-OTHER 01 - 1,186,800 - NUCOR CORP COMMON 670346105 42,415 909,212 SH SHARED-OTHER 01 - 909,212 - OMNICARE INC CONVERTIBLE DEB 681904AL2 5,818 7,150,000 PRN SHARED-OTHER 01 - - - PARTNERRE LTD COMMON G6852T105 2,597 34,784 SH SHARED-OTHER 01 - 34,784 - PAYCHEX INC COMMON 704326107 15,360 501,300 SH SHARED-OTHER 01 - 501,300 - PEPSICO INC COMMON 713448108 75,422 1,240,500 SH SHARED-OTHER 01 - 1,240,500 - PFIZER INC COMMON 717081103 58,858 3,235,725 SH SHARED-OTHER 01 - 3,235,725 - PITNEY BOWES INC COMMON 724479100 26,925 1,183,000 SH SHARED-OTHER 01 - 1,183,000 - PRAXAIR INC COMMON 74005P104 30,283 377,072 SH SHARED-OTHER 01 - 377,072 - PROCTER & GAMBLE CO/THE COMMON 742718109 127,602 2,104,604 SH SHARED-OTHER 01 - 2,104,604 - RPM INTERNATIONAL INC COMMON 749685103 29,304 1,441,418 SH SHARED-OTHER 01 - 1,441,418 - SPECTRA ENERGY CORP COMMON 847560109 29,990 1,462,194 SH SHARED-OTHER 01 - 1,462,194 - STAPLES INC COMMON 855030102 12,910 525,000 SH SHARED-OTHER 01 - 525,000 - SYSCO CORP COMMON 871829107 15,563 557,000 SH SHARED-OTHER 01 - 557,000 - VERIZON COMMUNICATIONS INC COMMON 92343V104 23,191 700,000 SH SHARED-OTHER 01 - 700,000 - WEST PHARMACEUTICAL CONVERTIBLE DEB 955306AA3 4,368 5,200,000 PRN SHARED-OTHER 01 - - - 1,714,622 3

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