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

                                    FORM 13F

                               FORM 13F COVER PAGE

Report for the Calendar Year or Quarter Ended: September 30, 2008

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:  Kenneth W. Stecher
Title: Chief Executive Officer
Phone: (513) 870-2000

Signature, Place and Date of Signing:


       /s/ Kenneth W. Stecher              Fairfield, Ohio      November 5, 2008
- -------------------------------------   ---------------------   ----------------

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


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                              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  2,337,248
                                       (thousands)

List of Other Included Managers

No.   File No.    Name
- ---   --------    ----
01    028-10798   Cincinnati Financial Corporation


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COLUMN 2 COLUMN 3 COLUMN 4 COLUMN 5 COLUMN 6 COLUMN 7 COLUMN 8 ----------- --------- --------- --------------- ------------ -------- ------------------------- TITLE OF SHARES/ SH/ INVESTMENT ISSUER CLASS CUSIP FMV (000) PRINCIPAL PRN DIS OTH MGRS SOLE SHARED NONE - ---------------------------- ----------- --------- --------- ---------- --- ------------ -------- -------- --------- ---- 3M COMPANY COMMON 88579Y101 23,806 348,500 SH SHARED-OTHER 01 -- 348,500 -- ABBOTT LABORATORIES COMMON 002824100 24,644 428,000 SH SHARED-OTHER 01 -- 428,000 -- AGL RESOURCES COMMON 001204106 17,190 547,800 SH SHARED-OTHER 01 -- 547,800 -- ALLIANCEBERNSTEIN COMMON 01881G106 75,819 2,048,600 SH SHARED-OTHER 01 -- 2,048,600 -- ALLIED WASTE INDUSTRIES INC CONVERTIBLE DEB 019589AD2 4,734 5,050,000 PRN SHARED-OTHER 01 -- -- -- ARTHUR J GALLAGHER COMMON 363576109 3,368 131,246 SH SHARED-OTHER 01 -- 131,246 -- AT&T INC COMMON 00206R102 22,420 803,000 SH SHARED-OTHER 01 -- 803,000 -- AVERY DENNISON CORP COMMON 053611109 23,225 522,138 SH SHARED-OTHER 01 -- 522,138 -- BB & T CORP COMMON 054937107 7,137 188,800 SH SHARED-OTHER 01 -- 188,800 -- BOEING CO COMMON 097023105 22,246 387,898 SH SHARED-OTHER 01 -- 387,898 -- BOSTON PROPERTIES INC CONVERTIBLE DEB 10112RAK0 5,414 6,250,000 PRN SHARED-OTHER 01 -- -- -- CHEVRON CORPORATION COMMON 166764100 81,523 988,400 SH SHARED-OTHER 01 -- 988,400 -- CONOCOPHILLIPS COMMON 20825C104 25,638 350,000 SH SHARED-OTHER 01 -- 350,000 -- DIEBOLD INC. COMMON 253651103 21,267 642,300 SH SHARED-OTHER 01 -- 642,300 -- DUKE ENERGY CORP COMMON 26441C105 33,915 1,945,800 SH SHARED-OTHER 01 -- 1,945,800 -- EQUITABLE RESOURCES INC COMMON 294549100 22,008 600,000 SH SHARED-OTHER 01 -- 600,000 -- EQUITY RESIDENTIAL CONVERTIBLE DEB 26884AAV5 4,416 4,800,000 PRN SHARED-OTHER 01 -- -- -- EXXON MOBIL CORPORATION COMMON 30231G102 207,725 2,674,800 SH SHARED-OTHER 01 -- 2,674,800 -- FERRO CORPORATION CV DEB CONVERTIBLE DEB 315405AL4 5,270 5,250,000 PRN SHARED-OTHER 01 -- -- -- FIFTH THIRD BANCORP COMMON 316773100 15,903 1,336,352 SH SHARED-OTHER 01 -- 1,336,352 -- FORTUNE BRANDS INC COMMON 349631101 20,076 350,000 SH SHARED-OTHER 01 -- 350,000 -- GENERAL ELECTRIC CO COMMON 369604103 54,396 2,133,185 SH SHARED-OTHER 01 -- 2,133,185 -- GENUINE PARTS CO COMMON 372460105 41,497 1,032,000 SH SHARED-OTHER 01 -- 1,032,000 -- HUNTINGTON BANCSHARES INC CONVERTIBLE PFD 446150401 11,668 15,034 SH SHARED-OTHER 01 -- -- -- HUTCHINSON TECH CONVERTIBLE DEB 448407AF3 1,788 2,500,000 PRN SHARED-OTHER 01 -- -- -- ILLINOIS TOOL WORKS COMMON 452308109 22,803 513,000 SH SHARED-OTHER 01 -- 513,000 -- JOHNSON & JOHNSON COMMON 478160104 166,874 2,408,685 SH SHARED-OTHER 01 -- 2,408,685 -- KEYCORP INC. CONVERTIBLE PFD 493267405 2,975 35,000 SH SHARED-OTHER 01 -- -- -- LEGGETT & PLATT INC COMMON 524660107 25,409 1,166,100 SH SHARED-OTHER 01 -- 1,166,100 -- LINCOLN NATIONAL CORP COMMON 534187109 11,896 277,869 SH SHARED-OTHER 01 -- 277,869 -- LINEAR TECHNOLOGY CORP COMMON 535678106 21,640 705,800 SH SHARED-OTHER 01 -- 705,800 -- MEDTRONIC INC COMMON 585055106 28,069 560,250 SH SHARED-OTHER 01 -- 560,250 -- MICROCHIP TECHNOLOGY INC COMMON 595017104 26,193 890,000 SH SHARED-OTHER 01 -- 890,000 -- NEW YORK COMMUNITY BANCORP 6% CV TR PFD CONVERTIBLE PFD 64944P307 3,705 95,000 SH SHARED-OTHER 01 -- -- -- NORAM ENERGY CORP CV DEB CONVERTIBLE DEB 655419AC3 10,013 10,652,650 PRN SHARED-OTHER 01 -- -- -- OMNICARE INC CONVERTIBLE DEB 681904AL2 4,683 7,150,000 PRN SHARED-OTHER 01 -- -- -- PARTNERRE LTD COMMON G6852T105 2,368 34,784 SH SHARED-OTHER 01 -- 34,784 -- PAYCHEX INC COMMON 704326107 7,432 225,000 SH SHARED-OTHER 01 -- 225,000 -- PEPSICO INC COMMON 713448108 55,270 775,500 SH SHARED-OTHER 01 -- 775,500 -- PFIZER INC COMMON 717081103 33,192 1,800,000 SH SHARED-OTHER 01 -- 1,800,000 -- PIEDMONT NATURAL GAS COMMON 720186105 95,433 2,986,000 SH SHARED-OTHER 01 -- 2,986,000 -- PITNEY BOWES INC COMMON 724479100 24,380 733,000 SH SHARED-OTHER 01 -- 733,000 -- PNC FINANCIAL SERVICES GROUP COMMON 693475105 73,303 981,300 SH SHARED-OTHER 01 -- 981,300 -- PPG INDUSTRIES INC COMMON 693506107 23,211 398,000 SH SHARED-OTHER 01 -- 398,000 -- PRAXAIR INC COMMON 74005P104 1,794 25,000 SH SHARED-OTHER 01 -- 25,000 -- PROCTER & GAMBLE CORPORATION COMMON 742718109 394,097 5,655,000 SH SHARED-OTHER 01 -- 5,655,000 -- REINSURANCE GROUP OF AMERICA 5.75% PIERS CONVERTIBLE PFD 759351307 6,509 109,400 SH SHARED-OTHER 01 -- -- -- RPM INTERNATIONAL INC COMMON 749685103 23,639 1,222,300 SH SHARED-OTHER 01 -- 1,222,300 -- SEACOR SMITH INC NOTES CONVERTIBLE DEB 811904AH4 3,503 3,000,000 PRN SHARED-OTHER 01 -- -- -- SPECTRA ENERGY CORP COMMON 847560109 19,585 822,900 SH SHARED-OTHER 01 -- 822,900 -- SYSCO CORP COMMON 871829107 216 7,000 SH SHARED-OTHER 01 -- 7,000 -- THE STANLEY WORKS COMMON 854616109 22,101 529,500 SH SHARED-OTHER 01 -- 529,500 -- U S BANCORP COMMON 902973304 166,914 4,633,920 SH SHARED-OTHER 01 -- 4,633,920 -- VORNADO REALTY TRUST CONVERTIBLE DEB 929043AE7 7,746 9,290,000 PRN SHARED-OTHER 01 -- -- -- WELLS FARGO & CO COMMON 949746101 148,619 3,960,000 SH SHARED-OTHER 01 -- 3,960,000 -- WEST PHARMACEUTICAL CONVERTIBLE DEB 955306AA3 5,239 5,200,000 PRN SHARED-OTHER 01 -- -- -- WYETH COMMON 983024100 121,348 3,285,000 SH SHARED-OTHER 01 -- 3,285,000 -- 2,337,248
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