| 1 | Jimmy BRYAN | Belond AP/George Salih | Epperly | Indy Roadster | Offenhauser | L4 4.5 | Firestone |
| 2 | Jim RATHMANN | Leader Card 500 | Epperly | Indy Roadster | Offenhauser | L4 4.5 | Firestone |
| 4 | Pat O'CONNOR | Sumar/Chapman Root | Kurtis Kraft | 500G | Offenhauser | L4 4.5 | Firestone |
| 5 | Ed ELISIAN | John Zink | Watson | Indy Roadster | Offenhauser | L4 4.5 | Firestone |
| 7 | Johnny THOMSON | D-A Lubricants Racing | Kurtis Kraft | ??? | Offenhauser | L4 4.5 | Firestone |
| 8 | Rodger WARD | Wolcott Fuel Injection | Lesovsky | ?? | Offenhauser | L4 4.5 | Firestone |
| 9 | Johnny BOYD | Bowes Seal Fast Racing | Kurtis Kraft | 500G | Offenhauser | L4 4.5 | Firestone |
| 10 | Rex EASTON | Hoover Motor Express | Kurtis Kraft | 500G | Offenhauser | L4 4.5 | Firestone |
| 14 | Bob VEITH | Bowes Seal Fast Racing | Kurtis Kraft | 500G | Offenhauser | L4 4.5 | Firestone |
| 15 | Paul RUSSO | Novi Racing | Kurtis Kraft | 500F | Novi | L8 c 3.0 | Firestone |
| 16 | Jimmy REECE | John Zink | Watson | Indy Roadster | Offenhauser | L4 4.5 | Firestone |
| 17 | Art BISCH | Ansted Rotary | Kurtis Kraft | 500C | Offenhauser | L4 4.5 | Firestone |
| 17 | Jack ENSLEY | Ansted Rotary | Kurtis Kraft | 500D | Offenhauser | L4 4.5 | Firestone |
| 18 | Marshall TEAGUE | Sumar/Chapman Root | Kurtis Kraft | 500G | Offenhauser | L4 4.5 | Firestone |
| 19 | Johnnie TOLAN | Greenman-Casale | Kuzma | Indy Roadster | Offenhauser | L4 4.5 | Firestone |
| 24 | Gene HARTLEY | Hoyt Machine/Fred Sommer | Kurtis Kraft | 500C | Offenhauser | L4 4.5 | Firestone |
| 25 | Jack TURNER | Massaglia Hotels | Lesovsky | ?? | Offenhauser | L4 4.5 | Firestone |
| 26 | Don FREELAND | Bob Estes | Phillips | ??? | Offenhauser | L4 4.5 | Firestone |
| 28 | Elmer GEORGE | Ansted Rotary | Kuzma | Indy Roadster | Offenhauser | L4 4.5 | Firestone |
| 29 | AJ FOYT | Dean Van Lines | Kuzma | Indy Roadster | Offenhauser | L4 4.5 | Firestone |
| 31 | Paul GOLDSMITH | City of Daytona | Kurtis Kraft | 500G | Offenhauser | L4 4.5 | Firestone |
| 33 | Tony BETTENHAUSEN | Jones & Maley Cars | Epperly | Indy Roadster | Offenhauser | L4 4.5 | Firestone |
| 43 | Billy GARRETT | H.A. Chapman | Kurtis Kraft | 500G | Offenhauser | L4 4.5 | Firestone |
| 44 | Jud LARSON | John Zink | Watson | Indy Roadster | Offenhauser | L4 4.5 | Firestone |
| 45 | Johnnie PARSONS | Fred Gerhardt | Kurtis Kraft | 500G | Offenhauser | L4 4.5 | Firestone |
| 48 | Jerry UNSER | Sumar/Chapman Root | Kurtis Kraft | 500C | Offenhauser | L4 4.5 | Firestone |
| 49 | Ray CRAWFORD | Meguiar's Mirror/Crawford | Kurtis Kraft | 500G | Offenhauser | L4 4.5 | Firestone |
| 51 | Jerry UNSER | Duncan | Kurtis Kraft | 500A | DeSoto | V8 | Firestone |
| 52 | Al KELLER | Bardahl/Pat Clancy | Kurtis Kraft | 500G | Offenhauser | L4 4.5 | Firestone |
| 54 | Bill CHEESBOURG | Novi Racing | Kurtis Kraft | 500F | Novi | L8 c 3.0 | Firestone |
| 54 | Juan Manuel FANGIO | Novi Auto Air Conditioner | Kurtis Kraft | 500F | Novi | L8 c 3.0 | Firestone |
| 55 | Eddie RUSSO | Sclavi & Amos | Kuzma | Indy Roadster | Offenhauser | L4 4.5 | Firestone |
| 56 | Fred AGABASHIAN | City of Memphis | Kurtis Kraft | 500G | Offenhauser | L4 4.5 | Firestone |
| 57 | Fred AGABASHIAN | Helse / H.H. Johnson | Kuzma | Indy Roadster | Offenhauser | L4 4.5 | Firestone |
| 57 | Art BISCH | Helse / H.H. Johnson | Kuzma | Indy Roadster | Offenhauser | L4 4.5 | Firestone |
| 58 | Van JOHNSON | Ray Brady | Kurtis Kraft | 500C | Offenhauser | L4 4.5 | Firestone |
| 59 | Dempsey WILSON | Bob Sorenson | Kuzma | Indy Roadster | Offenhauser | L4 4.5 | Firestone |
| 61 | Eddie JOHNSON | Bryant Heating | Kurtis Kraft | 500G | Offenhauser | L4 4.5 | Firestone |
| 62 | Joe GIBA | Carl Anderson | Kurtis Kraft | 500D | Offenhauser | L4 4.5 | Firestone |
| 65 | Bob CHRISTIE | Federal Engineering | Kurtis Kraft | 500C | Offenhauser | L4 4.5 | Firestone |
| 66 | Jim McWITHEY | Federal Engineering | Snowberger | ??? | Offenhauser | L4 4.5 | Firestone |
| 68 | Len SUTTON | Jim Robbins | Kurtis Kraft | 500G | Offenhauser | L4 4.5 | Firestone |
| 69 | Jimmy DAYWALT | Federal Engineering | Kurtis Kraft | 500D | Offenhauser | L4 4.5 | Firestone |
| 71 | Dempsey WILSON | Hall-Mar | Kurtis Kraft | ??? | Offenhauser | L4 4.5 | Firestone |
| 72 | Rex EASTON | Wyandotte Tool | Kurtis Kraft | 500A | Offenhauser | L4 4.5 | Firestone |
| 74 | Bill HOMEIER | Kurtis-Kraft / Smith | Kurtis Kraft | 500C | Offenhauser | L4 4.5 | Firestone |
| 75 | Fred AGABASHIAN | D-A Lubricants Racing | Kuzma | Indy Roadster | Offenhauser | L4 4.5 | Firestone |
| 75 | Al HERMAN | D-A Lubricants Racing | Kuzma | Indy Roadster | Offenhauser | L4 4.5 | Firestone |
| 77 | Juan Manuel FANGIO | Dayton Steel Foundry | Kurtis Kraft | 500G | Offenhauser | L4 4.5 | Firestone |
| 77 | Mike MAGILL | Dayton Steel Foundry | Kurtis Kraft | 500G | Offenhauser | L4 4.5 | Firestone |
| 82 | Jimmy DAYWALT | Central Excavating/Pete Salemi | Kuzma | Indy Roadster | Offenhauser | L4 4.5 | Firestone |
| 82 | Len SUTTON | Central Excavating/Pete Salemi | Kuzma | Indy Roadster | Offenhauser | L4 4.5 | Firestone |
| 83 | Shorty TEMPLEMAN | McNamara/Kalamazoo Sports | Kurtis Kraft | 500D | Offenhauser | L4 4.5 | Firestone |
| 88 | Eddie SACHS | Peter Schmidt | Kuzma | Indy Roadster | Offenhauser | L4 4.5 | Firestone |
| 89 | Chuck WEYANT | Dunn Engineering | Dunn | ??? | Offenhauser | L4 4.5 | Firestone |
| 92 | Jerry UNSER | Roy McKay | Kurtis Kraft | 500G | Offenhauser | L4 4.5 | Firestone |
| 93 | Bob CORTNER | McKay's Bulldog | Kurtis Kraft | 3000 | Offenhauser | L4 4.5 | Firestone |
| 95 | Bill HOMEIER | Safety Auto Glass | Kurtis Kraft | 500C | Offenhauser | L4 4.5 | Firestone |
| 95 | Leroy WARRINER | Safety Auto Glass | Kurtis Kraft | 500C | Offenhauser | L4 4.5 | Firestone |
| 97 | Dick RATHMANN | McNamara/Kalamazoo Sports | Watson | Indy Roadster | Offenhauser | L4 4.5 | Firestone |
| 98 | Troy RUTTMAN | J.C. Agajanian | Kuzma | Indy Roadster | Offenhauser | L4 4.5 | Firestone |
| 99 | George AMICK | Norman Demler | Epperly | Indy Roadster | Offenhauser | L4 4.5 | Firestone |