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

                                    FORM 13F

                              FORM 13F COVER PAGE


                  Report for the Quarter Ended March 31, 2003



                          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.

                                 Fred J. Runk
                     Senior Vice President and Treasurer
                                (513) 579-2489
                -----------------------------------------------
                (Name, Title and Phone Number of Person Signing
                 this Report on Behalf of Reporting Manager)



Signature:

Fred J. Runk                            Cincinnati, Ohio      May 13, 2003
- ----------------------------------
Fred J. Runk
Senior Vice President and Treasurer


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









                                 Page 1 of 3

FORM 13F SUMMARY PAGE --------------------- Number of Other Included Managers: 4 ---------- Form 13F Information Table Entry Total: 52 ---------- Form 13F Information Table Value Total (thousands): $ 888,742 ---------- 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. 28-5042 AFC Holding Company 2. 28-497 American Financial Corporation 3. 28-498 Great American Insurance Company 4. 28-2414 Americam Premier Underwriters, Inc. 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 - -------------------------------------------- AOL TIME WARNER INC COM 00184A 10 5 284 26,149SH Defined 1,2,3 26,149 CIT GROUP INC COM 125581 10 8 1,433 85,000SH Defined " 85,000 CABLEVISION SYS CORP CL A NY CABLVS 12686C 10 9 522 27,500SH Defined " 27,500 CHIQUITA BRANDS INTL INC *W EXP 3/19/2009 170032 11 4 6,377 1,944,340SH Defined " 1,944,340 COMCAST CORP NEW CL A 20030N 10 1 576 20,153SH Defined " 20,153 COMCAST CORP NEW CL A SPL 20030N 20 0 962 35,000SH Defined " 35,000 CONAGRA FOODS INC COM 205887 10 2 502 25,000SH Defined " 25,000 GREAT AMERN FINL RES INC COM 389915 10 9 531,510 35,059,995SH Defined " 35,059,995 KEYCORP NEW COM 493267 10 8 1,354 60,000SH Defined " 60,000 KROGER CO COM 501044 10 1 99 7,500SH Defined " 7,500 MARSH SUPERMARKETS INC CL B 571783 20 8 2,009 189,543SH Defined " 189,543 MARSH SUPERMARKETS INC CL A 571783 30 7 8,393 729,844SH Defined " 729,844 PNC FINL SVCS GROUP INC COM 693475 10 5 2,712 64,000SH Defined " 64,000 PROVIDENT FINL GROUP INC COM 743866 10 5 118,299 5,572,271SH Defined " 5,572,271 QWEST COMMUNICATIONS INTL INC COM 749121 10 9 62 17,902SH Defined " 17,902 RCN CORP COM 749361 10 1 15 21,000SH Defined " 21,000 SAFEWAY INC COM NEW 786514 20 8 683 36,100SH Defined " 36,100 SEABULK INTL INC COM 81169P 10 1 765 84,553SH Defined " 84,553 SEPRACOR INC COM 817315 10 4 1,397 103,200SH Defined " 103,200 TENET HEALTHCARE CORP COM 88033G 10 0 1,053 90,000SH Defined " 60,000 TYCO INTL LTD NEW COM 902124 10 6 1,736 135,000SH Defined " 135,000 UNITED AUTO GROUP INC COM 909440 10 9 267 22,700SH Defined " 22,700 WASHINGTON MUT INC COM 939322 10 3 710 20,134SH Defined " 20,134 WILTEL COMMUNICATNS GROUP INC COM 972487 10 2 3,821 303,284SH Defined " 303,284 HOLDINGS OF AMERICAN PREMIER UNDERWRITERS, INC. - ------------------------------ INFINITY PPTY & CAS CORP COM 45665Q 10 3 143,271 7,850,465SH Defined 1,2,4 7,850,465 HOLDINGS OF OTHER SUBSIDIARIES OF AFG EACH HAVING LESS THAN $100 MILLION IN 13F SECURITIES - ------------------------------ AMERICAN INTL GROUP INC COM 026874 10 7 2,473 50,000SH Defined 1,2,3 50,000 BRISTOL MYERS SQUIBB CO COM 110122 10 8 423 20,000SH Defined 1,2,3,4 10,000 10,000 CIT GROUP INC COM 125581 10 8 1,602 95,000SH Defined 1,2,3 95,000 CABLEVISION SYS CORP CL A NY CABLVS 12686C 10 9 6,310 332,277SH Defined 1,2,3,4 329,300 2,977 CHIQUITA BRANDS INTL INC *W EXP 3/19/2009 170032 11 4 2,636 803,643SH Defined " 803,643 COMCAST CORP NEW CL A 20030N 10 1 423 14,800SH Defined 1,2,4 14,800 COMCAST CORP NEW CL A SPL 20030N 20 0 378 13,760SH Defined " 13,760 JOHN HANCOCK BK &THRIFT OPP SH BEN INT 409735 10 7 470 67,200SH Defined " 67,200 HOST MARRIOTT CORP NEW COM 44107P 10 4 70 10,110SH Defined " 10,110 KROGER CO COM 501044 10 1 99 7,500SH Defined 1,2,3 7,500 LEUCADIA NATL CORP COM 527288 10 4 942 26,352SH Defined 1,2 26,352 MARSH SUPERMARKETS INC CL B 571783 20 8 5,171 487,801SH Defined 1,2,4 487,801 METLIFE INC COM 59156R 10 8 1,296 49,115SH Defined 49,115 POPULAR INC COM 733174 10 6 6,435 189,320SH Defined 1,2,3 189,320 PROVIDENT FINL GROUP INC COM 743866 10 5 14,796 696,943SH Defined 1,2,3,4 499,704 197,239 RCN CORP COM 749361 10 1 51 70,250SH Defined " 20,000 50,250 SAFEWAY INC COM NEW 786514 20 8 706 37,300SH Defined 1,2,3 37,300 SANTANDER BANCORP COM 802809 10 3 404 30,250SH Defined " 30,250 SEABULK INTL INC COM 81169P 10 1 3,409 376,645SH Defined 1,2,3,4 278,645 98,000 SEPRACOR INC COM 817315 10 4 108 8,000SH Defined 1,2,3 8,000 TENET HEALTHCARE CORP COM 88033G 10 0 2,032 121,700SH Defined " 121,700 TYCO INTL LTD NEW COM 902124 10 6 1,608 125,000SH Defined " 125,000 US BANCORP DEL COM NEW 902973 30 4 540 28,462SH Defined 1,2,4 28,462 UNITED AUTO GROUP INC COM 909440 10 9 298 25,400SH Defined 1,2,3 25,400 WASHINGTON MUT INC COM 939322 10 3 1,594 45,179SH Defined " 45,179 WILTEL COMMUNICATNS GROUP INC COM 972487 10 2 3,067 243,369SH Defined " 243,369 ZENITH NATL INS CORP COM 989390 10 9 2,121 98,900SH Defined 1,2,4 98,900 -------- REPORT TOTAL $888,724 ========