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, 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:      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 7, 2011
  ------------------------      ---------------         ----------------

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


FORM 13F SUMMARY PAGE Report Summary: Number of Other Included Managers 1 --------- Form 13F Information Table Entry Total 57 --------- Form 13F Information Table Value Total 2,031,758 --------- (thousands) List of Other Included Managers No. File No. Name 01 028-10798 Cincinnati Financial Corporation

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 Sole Shared None /Principal /PRN Dis Mgrs 3M CO COMMON 88579Y101 45,023 521,700 SH SHARED-OTHER 01 - 521,700 - ABBOTT LABORATORIES COMMON 002824100 55,441 1,157,200 SH SHARED-OTHER 01 - 1,157,200 - AGL RESOURCES INC COMMON 001204106 26,540 740,300 SH SHARED-OTHER 01 - 740,300 - ALEXANDRIA REAL ESTATE EQUITIES CONVERTIBLE DEB 015271AA7 1,010 1,000,000 PRN SHARED-OTHER 01 - - - ALLIANCEBERNSTEIN HOLDING LP COMMON 01881G106 47,794 2,048,600 SH SHARED-OTHER 01 - 2,048,600 - ASPEN INSURANCE CONVERTIBLE PFD G05384113 8,794 160,000 SH SHARED-OTHER 01 - - - AT&T INC COMMON 00206R102 28,881 983,000 SH SHARED-OTHER 01 - 983,000 - AUTOMATIC DATA PROCESSING COMMON 053015103 43,175 932,900 SH SHARED-OTHER 01 - 932,900 - BAXTER INTERNATIONAL INC COMMON 071813109 45,052 890,000 SH SHARED-OTHER 01 - 890,000 - BLACKROCK INC COMMON 09247X101 67,656 355,000 SH SHARED-OTHER 01 - 355,000 - BOSTON PROPERTIES INC CONVERTIBLE DEB 10112RAK0 6,344 6,250,000 PRN SHARED-OTHER 01 - - - CHEVRON CORP COMMON 166764100 90,192 988,400 SH SHARED-OTHER 01 - 988,400 - CISCO SYSTEMS INC COMMON 17275R102 5,462 270,000 SH SHARED-OTHER 01 - 270,000 - CLOROX COMPANY COMMON 189054109 37,651 594,992 SH SHARED-OTHER 01 - 594,992 - CONOCOPHILLIPS COMMON 20825C104 23,835 350,000 SH SHARED-OTHER 01 - 350,000 - DOVER CORP COMMON 260003108 17,680 302,480 SH SHARED-OTHER 01 - 302,480 - DUKE ENERGY CORP COMMON 26441C105 34,655 1,945,800 SH SHARED-OTHER 01 - 1,945,800 - EMERSON ELECTRIC CO COMMON 291011104 41,208 720,800 SH SHARED-OTHER 01 - 720,800 - EQT CORP COMMON 26884L109 26,904 600,000 SH SHARED-OTHER 01 - 600,000 - EXXON MOBIL CORP COMMON 30231G102 109,388 1,496,000 SH SHARED-OTHER 01 - 1,496,000 - GENUINE PARTS CO COMMON 372460105 58,887 1,147,000 SH SHARED-OTHER 01 - 1,147,000 - HASBRO INC COMMON 418056107 14,904 315,900 SH SHARED-OTHER 01 - 315,900 - HONEYWELL INTERNATIONAL INC COMMON 438516106 17,522 329,600 SH SHARED-OTHER 01 - 329,600 - HUNTINGTON BANCSHARES INC CONVERTIBLE PFD 446150401 10,729 9,754 SH SHARED-OTHER 01 - - - INTEL CORP COMMON 458140100 32,119 1,527,300 SH SHARED-OTHER 01 - 1,527,300 - INTL BUSINESS MACHINES CORP COMMON 459200101 37,424 255,000 SH SHARED-OTHER 01 - 255,000 - JOHNSON & JOHNSON COMMON 478160104 86,590 1,400,000 SH SHARED-OTHER 01 - 1,400,000 - JP MORGAN CHASE COMMON 46625H100 18,029 425,000 SH SHARED-OTHER 01 - 425,000 - KEYCORP INC. CONVERTIBLE PFD 493267405 3,749 35,000 SH SHARED-OTHER 01 - - - LEGGETT & PLATT INC COMMON 524660107 46,403 2,038,800 SH SHARED-OTHER 01 - 2,038,800 - LIFE POINT HOSPITALS SR SUB NTS CONVERTIBLE DEB 53219LAG4 4,994 5,000,000 PRN SHARED-OTHER 01 - - - LINEAR TECHNOLOGY CORP COMMON 535678106 27,008 780,800 SH SHARED-OTHER 01 - 780,800 - MCDONALD'S CORP COMMON 580135101 42,525 554,000 SH SHARED-OTHER 01 - 554,000 - MEDTRONIC INC COMMON 585055106 28,198 760,250 SH SHARED-OTHER 01 - 760,250 - MEDTRONIC INC CONVERTIBLE DEB 585055AK2 7,144 7,100,000 PRN SHARED-OTHER 01 - - - MERIDIAN BIOSCIENCE INC COMMON 589584101 18,991 820,000 SH SHARED-OTHER 01 - 820,000 - METLIFE INC COMMON 59156R108 73,602 1,656,206 SH SHARED-OTHER 01 - 1,656,206 - MICROCHIP TECHNOLOGY INC COMMON 595017104 36,844 1,077,000 SH SHARED-OTHER 01 - 1,077,000 - MICROSOFT CORP COMMON 594918104 26,420 946,600 SH SHARED-OTHER 01 - 946,600 - NEW YORK COMMUNITY BANCORP CONVERTIBLE PFD 64944P307 4,940 95,000 SH SHARED-OTHER 01 - - - NORTHERN TRUST CORP COMMON 665859104 70,914 1,279,799 SH SHARED-OTHER 01 - 1,279,799 - NUCOR CORP COMMON 670346105 43,172 985,212 SH SHARED-OTHER 01 - 985,212 - OMNICARE INC CONVERTIBLE DEB 681904AL2 1,955 2,131,000 PRN SHARED-OTHER 01 - - - PARTNERRE LTD COMMON G6852T105 2,795 34,784 SH SHARED-OTHER 01 - 34,784 - PAYCHEX INC COMMON 704326107 21,059 681,300 SH SHARED-OTHER 01 - 681,300 - PEPSICO INC COMMON 713448108 81,042 1,240,500 SH SHARED-OTHER 01 - 1,240,500 - PFIZER INC COMMON 717081103 56,658 3,235,725 SH SHARED-OTHER 01 - 3,235,725 - PITNEY BOWES INC COMMON 724479100 28,605 1,183,000 SH SHARED-OTHER 01 - 1,183,000 - PRAXAIR INC COMMON 74005P104 37,240 390,072 SH SHARED-OTHER 01 - 390,072 - PROCTER & GAMBLE CO/THE COMMON 742718109 135,389 2,104,604 SH SHARED-OTHER 01 - 2,104,604 - RPM INTERNATIONAL INC COMMON 749685103 34,770 1,573,318 SH SHARED-OTHER 01 - 1,573,318 - SPECTRA ENERGY CORP COMMON 847560109 38,789 1,552,194 SH SHARED-OTHER 01 - 1,552,194 - SYSCO CORP COMMON 871829107 19,316 657,000 SH SHARED-OTHER 01 - 657,000 - UNITED TECHNOLOGIES CORP COMMON 913017109 42,533 540,306 SH SHARED-OTHER 01 - 540,306 - VERIZON COMMUNICATIONS INC COMMON 92343V104 30,771 860,000 SH SHARED-OTHER 01 - 860,000 - WAL-MART STORES INC COMMON 931142103 22,284 413,200 SH SHARED-OTHER 01 - 413,200 - WEST PHARMACEUTICAL CONVERTIBLE DEB 955306AA3 4,765 5,200,000 PRN SHARED-OTHER 01 - - - 2,031,758

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