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

                                    FORM 13F

                               FORM 13F COVER PAGE

Report for the Calendar Year or Quarter Ended: June 30, 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:             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 S. Miller
Title:   Sr. Vice President
Phone:   (513) 870-2633

Signature, Place and Date of Signing:

        /s/Kenneth S. Miller          Fairfield, Ohio        August 11, 2006
       ----------------------        -----------------      -----------------

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:                     56
                                                     ---------

Form 13F Information Table Value Total:              3,936,483
                                                     ---------

List of Other Included Managers:

01 Cincinnati Financial Corporation 13F File No.  028-10798
                                                 ----------



                                       2






COLUMN 2 COLUMN 3 COLUMN 4 COLUMN 5 SH/PRN PUT/CALL ISSUER TITLE OF CLASS CUSIP FMV (000) SHARES/PRINCIPAL ALLIANCEBERNSTEIN COMMON 01881G106 125,251 2,048,600 SH ALLIED WASTE INDUSTRIES INC CONVERTIBLE DEB 019589AD2 4,646 5,050,000 PRN BB & T CORP COMMON 054937107 7,852 188,800 SH BOSTON PROPERTIES INC CONVERTIBLE DEB 10112RAG9 2,505 2,550,000 PRN CAMDEN PROPERTY TRUST COMMON 133131102 7,355 100,000 SH CHEVRON CORPORATION COMMON 166764100 44,435 716,000 SH CONOCOPHILLIPS COMMON 20825C104 22,936 350,000 SH CRESCENT REAL ESTATE $1.6875 CONVERTIBLE PFD 225756204 3,162 150,000 SH DEVELOPERS DIVERSIFIED REALTY COMMON 251591103 2,609 50,000 SH DUKE ENERGY CORP COMMON 26441C105 48,337 1,645,800 SH EQUITABLE RESOURCES INC COMMON 294549100 20,100 600,000 SH EXXON MOBIL CORPORATION COMMON 30231G102 387,732 6,320,000 SH FIFTH THIRD BANCORP COMMON 316773100 1,593,888 43,136,352 SH FIRST FINANCIAL BANCORP COMMON 320209109 1,351 90,586 SH FISHER SCIENTIFIC INT' L CONVERTIBLE DEB 338032AX3 556 500,000 PRN FORTUNE BRANDS INC COMMON 349631101 22,013 310,000 SH GENERAL ELECTRIC CO. COMMON 369604103 41,200 1,250,000 SH GENUINE PARTS CO COMMON 372460105 40,114 962,900 SH GLIMCHER REALTY TRUST COMMON 379302102 2,481 100,000 SH HUNTINGTON BANCSHARES INC COMMON 446150104 1,504 63,800 SH HUTCHINSON TECH CONVERTIBLE DEB 448407AF3 2,194 2,500,000 PRN JOHNSON & JOHNSON COMMON 478160104 132,429 2,210,100 SH KAMAN CORP CV DEB CONVERTIBLE DEB 483548AC7 1,786 1,812,899 PRN KELLWOOD CORP CONVERTIBLE DEB 488044AF5 7,450 8,650,000 PRN LIBERTY MEDIA CORP CONVERTIBLE DEB 530715AR2 8,279 10,930,000 PRN LINCOLN NATIONAL CORP COMMON 534187109 18,392 325,869 SH LINEAR TECHNOLOGY CORP COMMON 535678106 4,046 120,800 SH MEDTRONIC INC COMMON 585055106 26,287 560,250 SH NATIONAL AUSTRALIA BANK $1.96875 CONVERTIBLE PFD 632525309 12,959 305,000 SH NATIONAL CITY CORPORATION COMMON 635405103 254,235 7,025,000 SH NATIONAL RETAIL PPTYS INC COMMON 637417106 5,287 265,000 SH NEW PLAN EXCEL RLTY TRUST INC COMMON 648053106 10,742 435,095 SH NEW YORK COMMUNITY BANCORP 6% CONVERTIBLE PFD 64944P307 4,460 95,000 SH NORAM ENERGY CORP CV DEB CONVERTIBLE DEB 655419AC3 12,979 13,311,550 PRN OMNICARE INC CONVERTIBLE DEB 681904AL2 6,480 7,150,000 PRN PARTNERRE LTD COMMON G6852T105 2,228 34,784 SH PEPSICO INC COMMON 713448108 30,020 500,000 SH PFIZER INC COMMON 717081103 21,827 930,000 SH PIEDMONT NATURAL GAS COMMON 720186105 72,560 2,986,000 SH PNC FINANCIAL SERVICES GROUP COMMON 693475105 127,008 1,810,000 SH PROCTER & GAMBLE CORPORATION COMMON 742718109 310,248 5,580,000 SH REINSURANCE GROUP OF AMERICA 5.75% CONVERTIBLE PFD 759351307 6,646 109,400 SH ROBBINS & MYERS CV SUB NOTES CONVERTIBLE DEB 770196AB9 4,735 4,056,000 PRN SCHERING-PLOUGH CORP CONVERTIBLE PFD 806605606 8,254 164,000 SH SEACOR SMITH INC NOTES CONVERTIBLE DEB 811904AH4 3,664 3,000,000 PRN SIMON PROPERTY GROUP INC COMMON 828806109 16,588 200,000 SH SKY FINANCIAL GROUP INC COMMON 83080P103 21,840 925,050 SH ST JUDE MEDICAL CVT SR DEBT CONVERTIBLE DEB 790849AB9 10,934 11,100,000 PRN SYSCO CORP COMMON 871829107 214 7,000 SH TANGER FCTRY OUTLET COMMON 875465106 13,155 406,400 SH THERMO ELECTRON CORP CV DEBS CONVERTIBLE DEB 883556AJ1 7,923 8,200,000 PRN TRAVELERS PROPERTY CASUALTY CONVERTIBLE DEB 89420G307 10,176 10,375,000 PRN U S BANCORP COMMON 902973304 97,708 3,164,120 SH WACHOVIA CORP. COMMON 929903102 27,327 505,300 SH WELLS FARGO & CO COMMON 949746101 109,508 1,632,500 SH WYETH COMMON 983024100 145,887 3,285,000 SH 3,936,483
3
COLUMN 6 COLUMN 7 COLUMN 8 ISSUER INVESTMENT DIS OTH MGRS SOLE SHARED NONE ALLIANCEBERNSTEIN SHARED 01 - 2,048,600 - ALLIED WASTE INDUSTRIES INC SHARED 01 - - - BB & T CORP SHARED 01 - 188,800 - BOSTON PROPERTIES INC SHARED 01 - - - CAMDEN PROPERTY TRUST SHARED 01 - 100,000 - CHEVRON CORPORATION SHARED 01 - 716,000 - CONOCOPHILLIPS SHARED 01 - 350,000 - CRESCENT REAL ESTATE $1.6875 SHARED 01 - - - DEVELOPERS DIVERSIFIED REALTY SHARED 01 - 50,000 - DUKE ENERGY CORP SHARED 01 - 1,645,800 - EQUITABLE RESOURCES INC SHARED 01 - 600,000 - EXXON MOBIL CORPORATION SHARED 01 - 6,320,000 - FIFTH THIRD BANCORP SHARED 01 - 43,136,352 - FIRST FINANCIAL BANCORP SHARED 01 - 90,586 - FISHER SCIENTIFIC INT' L SHARED 01 - - - FORTUNE BRANDS INC SHARED 01 - 310,000 - GENERAL ELECTRIC CO. SHARED 01 - 1,250,000 - GENUINE PARTS CO SHARED 01 - 962,900 - GLIMCHER REALTY TRUST SHARED 01 - 100,000 - HUNTINGTON BANCSHARES INC SHARED 01 - 63,800 - HUTCHINSON TECH SHARED 01 - - - JOHNSON & JOHNSON SHARED 01 - 2,210,100 - KAMAN CORP CV DEB SHARED 01 - - - KELLWOOD CORP SHARED 01 - - - LIBERTY MEDIA CORP SHARED 01 - - - LINCOLN NATIONAL CORP SHARED 01 - 325,869 - LINEAR TECHNOLOGY CORP SHARED 01 - 120,800 - MEDTRONIC INC SHARED 01 - 560,250 - NATIONAL AUSTRALIA BANK $1.96875 SHARED 01 - - - NATIONAL CITY CORPORATION SHARED 01 - 7,025,000 - NATIONAL RETAIL PPTYS INC SHARED 01 - 265,000 - NEW PLAN EXCEL RLTY TRUST INC SHARED 01 - 435,095 - NEW YORK COMMUNITY BANCORP 6% SHARED 01 - - - NORAM ENERGY CORP CV DEB SHARED 01 - - - OMNICARE INC SHARED 01 - - - PARTNERRE LTD SHARED 01 - 34,784 - PEPSICO INC SHARED 01 - 500,000 - PFIZER INC SHARED 01 - 930,000 - PIEDMONT NATURAL GAS SHARED 01 - 2,986,000 - PNC FINANCIAL SERVICES GROUP SHARED 01 - 1,810,000 - PROCTER & GAMBLE CORPORATION SHARED 01 - 5,580,000 - REINSURANCE GROUP OF AMERICA 5.75% SHARED 01 - - - ROBBINS & MYERS CV SUB NOTES SHARED 01 - - - SCHERING-PLOUGH CORP SHARED 01 - - - SEACOR SMITH INC NOTES SHARED 01 - - - SIMON PROPERTY GROUP INC SHARED 01 - 200,000 - SKY FINANCIAL GROUP INC SHARED 01 - 925,050 - ST JUDE MEDICAL CVT SR DEBT SHARED 01 - - - SYSCO CORP SHARED 01 - 7,000 - TANGER FCTRY OUTLET SHARED 01 - 406,400 - THERMO ELECTRON CORP CV DEBS SHARED 01 - - - TRAVELERS PROPERTY CASUALTY SHARED 01 - - - U S BANCORP SHARED 01 - 3,164,120 - WACHOVIA CORP. SHARED 01 - 505,300 - WELLS FARGO & CO SHARED 01 - 1,632,500 - WYETH SHARED 01 - 3,285,000 -
4
Request Electronic Delivery
If you are a shareholder, consider enrolling in Electronic Delivery. You will receive email alerts instead of paper mailings, saving your company's dollars.
Receive Email Alerts
When the company posts new information to this site, you can receive instant email alerts.
Sign up now!