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

                                    FORM 13F

                              FORM 13F COVER PAGE


                  Report for the Quarter Ended March 31, 2005



                          AMERICAN FINANCIAL GROUP, INC.
                 One East Fourth Street, Cincinnati, Ohio 45202
     -------------------------------------------------------------------------
     (Name and Address of Institutional Investment Manager Filing this Report)


                         Form 13F File Number:  28-4389


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.

                                 Robert H. Ruffing
                     	   Vice President and Controller
                                   (513) 579-2144
                -----------------------------------------------
                (Name, Title and Phone Number of Person Signing
                 this Report on Behalf of Reporting Manager)



Signature:

s/Robert H. Ruffing                        Cincinnati, Ohio     May 11, 2005
- ----------------------------------
Robert H. Ruffing
Vice President and Controller


Report Type:
     [X]  13F HOLDINGS REPORT.
     [ ]  13F NOTICE.
     [ ]  13F COMBINATION REPORT.








                                 Page 1 of 4

FORM 13F SUMMARY PAGE --------------------- Number of Other Included Managers: 2 ----------- Form 13F Information Table Entry Total: 95 ----------- Form 13F Information Table Value Total (thousands): $ 1,225,948 ----------- Name and 13F file numbers of all Institutional Investment Managers with respect to which this schedule is filed (other than American Financial Group, Inc.): Number 13F File Number Name of Subsidiary ------ --------------- ------------------------------------ 1. 28-498 Great American Insurance Company 2. Unassigned Great American Financial Resources Page 2

FORM 13F INFORMATION TABLE Column 4: Column 5: Column 8: Column 2: Market Shares or Column 6: Column 7: Voting Authority Column 1: Title of Column 3: Value Principal Investment Other --------------------------- Name of Issuer Class CUSIP (000's) Amount Discretion Managers Sole Shared None -------------- ---------------- ----------- --------- ------------ ---------- -------- ---------- ------ --------- HOLDINGS OF GREAT AMERICAN INSURANCE COMPANY - -------------------------------------------- ENDURANCE SPECIALTY HLDGS LT SHS G30397 10 6 15,514 410,000SH Defined 1 410,000 GLOBAL CROSSING LTD SHS NEW G3921A 17 5 101 6,521SH Defined " 6,521 AMERICAN ELEC PWR INC COM 025537 10 1 2,827 83,000SH Defined " 83,000 AMERICAN INTL GROUP INC COM 026874 10 7 9,198 166,000SH Defined " 166,000 CV THERAPEUTICS INC COM 126667 10 4 1,527 75,000SH Defined " 75,000 CABLEVISION SYS CORP CL A NY CABLVS 12686C 10 9 1,403 50,000SH Defined " 50,000 CITIGROUP INC COM 172967 10 1 13,482 300,000SH Defined " 300,000 COMCAST CORP NEW CL A 20030N 10 1 681 20,153SH Defined " 20,153 COMCAST CORP NEW CL A SPL 20030N 20 0 1,831 54,760SH Defined " 54,760 DPL INC COM 233293 10 9 5,440 217,600SH Defined " 217,600 ENERGY EAST CORP COM 29266M 10 9 2,105 80,300SH Defined " 80,300 FIFTH THIRD BANCORP COM 316773 10 0 6,256 145,563SH Defined " 145,563 GENTEK INC COM NEW 37245X 20 3 412 25,000SH Defined " 25,000 GREAT AMERN FINL RES INC COM 389915 10 9 653,308 38,565,995SH Defined " 38,565,995 INTEGRATED ELECTRICAL SVC COM 45811E 10 3 552 200,000SH Defined " 200,000 INTERNATIONAL STL GROUP INC COM 460377 10 4 881 22,300SH Defined " 22,300 JPMORGAN & CHASE & CO COM 46625H 10 0 4,498 130,000SH Defined " 130,000 MARSH SUPERMARKETS INC CL B 571783 20 8 7,443 602,644SH Defined " 602,644 MARSH SUPERMARKETS INC CL A 571783 30 7 7,879 709,844SH Defined " 709,844 MERCK & CO INC COM 589331 10 7 1,619 50,000SH Defined " 50,000 NTL INC DEL COM 62940M 10 4 9,074 142,523SH Defined " 142,523 NATIONAL CITY CORP COM 635405 10 3 140,639 4,198,189SH Defined " 4,198,189 NATIONAL INTERSTATE CORP COM 63654U 10 0 171,360 10,200,000SH Defined " 10,200,000 NEWS CORP CL B 65248E 20 3 1,057 60,000SH Defined " 60,000 NISOURCE INC COM 65473P 10 5 3,532 155,000SH Defined " 155,000 PNC FINL SVCS GROUP INC COM 693475 10 5 3,295 64,000SH Defined " 64,000 PEPCO HOLDINGS INC COM 713291 10 2 850 40,500SH Defined " 40,500 PETROLEUM GEO SVCS ASA NEW SPONSORED ADR 716599 10 5 672 10,000SH Defined " 10,000 PFIZER INC COM 717081 10 3 8,538 325,000SH Defined " 325,000 PROGRESS ENERGY INC COM 743263 10 5 1,665 39,700SH Defined " 39,700 QWEST COMMUNICATIONS INTL IN COM 749121 10 9 66 17,902SH Defined " 17,902 SBC COMMUNICATIONS INC COM 78387G 10 3 1,421 60,000SH Defined " 60,000 SANDISK CORP COM 80004C 10 1 1,390 50,000SH Defined " 50,000 SARA LEE CORP COM 803111 10 3 1,108 50,000SH Defined " 50,000 SEABULK INTL INC COM 81169P 10 1 883 42,456SH Defined " 42,456 SIRVA INC COM 82967Y 10 4 1,841 259,000SH Defined " 259,000 SUNTERRA CORP COM NEW 86787D 20 8 980 65,000SH Defined " 65,000 TIME WARNER INC COM 887317 10 5 459 26,149SH Defined " 26,149 TYCO INTL LTD NEW COM 902124 10 6 1,521 45,000SH Defined " 45,000 UNITED AUTO GROUP INC COM 909440 10 9 1,102 39,600SH Defined " 39,600 VIACOM INC CL B 925524 30 8 1,567 45,000SH Defined " 45,000 WASHINGTON MUT INC COM 939322 10 3 1,585 40,134SH Defined " 40,134 ZENITH NATL INS CORP COM 989390 10 9 1,281 24,700SH Defined " 24,700

HOLDINGS OF OTHER ENTITIES EACH HAVING LESS THAN $100 MILLION IN 13F SECURITIES - ------------------------------------------------------------------------------- GLOBAL CROSSING LTD SHS NEW G3921A 17 5 221 14,224SH Defined 1,2 14,224 AMERICAN INTL GROUP INC COM 026874 10 7 9,298 167,800SH Defined " 167,800 BRISTOL MYERS SQUIBB CO COM 110122 10 8 255 10,000SH Defined 1 10,000 BRISTOL MYERS SQUIBB CO COM 110122 10 8 255 10,000SH Other 10,000 CV THERAPEUTICS INC COM 126667 10 4 1,873 92,000SH Defined 1,2 92,000 CV THERAPEUTICS INC COM 126667 10 4 407 20,000SH Other 20,000 CABLEVISION SYS CORP CL A NY CABLVS 12686C 10 9 4,488 160,000SH Defined 1,2 160,000 CABLEVISION SYS CORP CL A NY CABLVS 12686C 10 9 281 10,000SH Other 10,000 CITIGROUP INC COM 172967 10 1 3,820 85,000SH Defined 1,2 85,000 CITIGROUP INC COM 172967 10 1 2,022 45,000SH Other 45,000 COMCAST CORP NEW CL A SPL 20030N 20 0 9,330 279,000SH Defined 1,2 279,000 DPL INC COM 233293 10 9 1,250 50,000SH Defined 1 50,000 DPL INC COM 233293 10 9 250 10,000SH Other 10,000 ENERGY EAST CORP COM 29266M 10 9 2,098 80,000SH Defined 1 80,000 FIFTH THIRD BANCORP COM 316773 10 0 6,408 149,100SH Defined 1,2 149,100 FIFTH THIRD BANCORP COM 316773 10 0 2,579 60,000SH Other 60,000 GENTEK INC COM NEW 37245X 20 3 660 40,000SH Defined 1,2 40,000 JOHN HANCOCK BK &THRIFT OPP SH BEN INT 409735 10 7 650 67,200SH Other 67,200 HOST MARRIOTT CORP NEW COM 44107P 10 4 167 10,110SH Other 10,110 INSTEEL INDUSTRIES INC COM 45774W 10 8 1,610 107,172SH Defined 1,2 107,172 INTEGRATED ELECTRICAL SVC COM 45811E 10 3 946 342,800SH Defined " 342,800 INTERNATIONAL STL GROUP INC COM 460377 10 4 3,081 78,000SH Defined " 78,000 JPMORGAN & CHASE & CO COM 46625H 10 0 692 20,000SH Defined " 20,000 JPMORGAN & CHASE & CO COM 46625H 10 0 1,730 50,000SH Other 50,000 LAIDLAW INTL INC COM 50730R 10 2 1,426 68,543SH Defined 1,2 68,543 MERCK & CO INC COM 589331 10 7 324 10,000SH Defined 1 10,000 NRG ENERGY INC COM NEW 629377 50 8 1,482 43,411SH Defined 1,2 43,411 NTL INC DEL COM 62940M 10 4 19,869 312,065SH Defined " 312,065 NTL INC DEL COM 62940M 10 4 1,886 29,618SH Other 29,618 NATIONAL CITY CORP COM 635405 10 3 5,312 158,562SH Defined 1,2 158,562 NATIONAL CITY CORP COM 635405 10 3 1,394 41,603SH Other 41,603 NEWS CORP CL B 65248E 20 3 1,409 80,000SH Defined 1,2 80,000 NISOURCE INC COM 65473P 10 5 684 30,000SH Defined 1 30,000 PEPCO HOLDINGS INC COM 713291 10 2 210 10,000SH Defined " 10,000 PETROLEUM GEO SVCS ASA NEW SPONSORED ADR 716599 10 5 1,008 15,000SH Defined 1,2 15,000 PFIZER INC COM 717081 10 3 4,334 165,000SH Defined " 165,000 PFIZER INC COM 717081 10 3 2,102 80,000SH Other 80,000 PIMCO HIGH INCOME FD COM SHS 722014 10 7 5,881 417,700SH Defined 1,2 417,700 POPULAR INC COM 733174 10 6 9,209 378,640SH Defined " 378,640 SBC COMMUNICATIONS INC COM 78387G 10 3 474 20,000SH Defined 1 20,000 SANDISK CORP COM 80004C 10 1 1,390 50,000SH Defined 1,2 50,000 SANTANDER BANCORP COM 802809 10 3 876 33,275SH Defined " 33,275 SEABULK INTL INC COM 81169P 10 1 407 19,600SH Sole 19,600 SEABULK INTL INC COM 81169P 10 1 2,969 142,820SH Defined 1,2 142,820 SIRVA INC COM 82967Y 10 4 2,589 364,100SH Defined " 364,100 SUNTERRA CORP COM NEW 86787D 20 8 2,262 150,000SH Defined " 150,000 US BANCORP DEL COM NEW 902973 30 4 820 28,462SH Other 28,462 UNITED AUTO GROUP INC COM 909440 10 9 1,622 58,300SH Defined 1,2 58,300 VIACOM INC CL B 925524 30 8 5,225 150,000SH Defined " 150,000 VIACOM INC CL B 925524 30 8 871 25,000SH Other 25,000 WASHINGTON MUT INC COM 939322 10 3 2,180 55,179SH Defined 1 55,179 ZENITH NATL INS CORP COM 989390 10 9 519 10,000SH Other 10,000 ---------- REPORT TOTAL $1,225,948 ==========