| 1 | Jimmy BRYAN | Dean Van Lines | Kuzma | Indy Roadster | Offenhauser | L4 4.5 | Firestone |
| 3 | Don FREELAND | Ansted Rotary | Kurtis Kraft | 500D | Offenhauser | L4 4.5 | Firestone |
| 4 | George AMICK | Federal Engineering | Snowberger | ??? | Offenhauser | L4 4.5 | Firestone |
| 5 | Jimmy REECE | Hoyt Machine/Fred Sommer | Kurtis Kraft | 500C | Offenhauser | L4 4.5 | Firestone |
| 6 | Johnny BOYD | Bowes Seal Fast/Bignotti | Kurtis Kraft | 500G | Offenhauser | L4 4.5 | Firestone |
| 7 | Bob VEITH | Bob Estes | Phillips | ??? | Offenhauser | L4 4.5 | Firestone |
| 8 | Rodger WARD | Roger Wolcott | Lesovsky | ?? | Offenhauser | L4 c 3.0 | Firestone |
| 9 | Sam HANKS | Belond Exhaust/George Salih | Epperly | Indy Roadster | Offenhauser | L4 4.5 | Firestone |
| 10 | Johnny THOMSON | D-A Lubricants Racing | Kuzma | Indy Roadster | Offenhauser | L4 4.5 | Firestone |
| 12 | Pat O'CONNOR | Ansted Rotary | Kurtis Kraft | 500G | Offenhauser | L4 4.5 | Firestone |
| 14 | Fred AGABASHIAN | Bowes Seal Fast/Bignotti | Kurtis Kraft | 500G | Offenhauser | L4 4.5 | Firestone |
| 15 | Tony BONADIES | Ray Brady | Kurtis Kraft | 500C | Offenhauser | L4 4.5 | Firestone |
| 16 | Al KELLER | Bardahl/Pat Clancy | Kurtis Kraft | 500G | Offenhauser | L4 4.5 | Firestone |
| 18 | Johnnie PARSONS | Sumar/Chapman Root | Kurtis Kraft | 500G | Offenhauser | L4 4.5 | Firestone |
| 18 | Dick RATHMANN | Sumar/Chapman Root | Kurtis Kraft | 500G | Offenhauser | L4 4.5 | Firestone |
| 19 | Jack TURNER | Bardahl/Pat Clancy | Kurtis Kraft | 500G | Offenhauser | L4 4.5 | Firestone |
| 22 | Gene HARTLEY | Massaglia Hotels | Lesovsky | ?? | Offenhauser | L4 4.5 | Firestone |
| 23 | Elmer GEORGE | Travelon Trailer / Ernest Ruiz | Kurtis Kraft | 500B | Offenhauser | L4 4.5 | Firestone |
| 25 | Jud LARSON | John Zink | Watson | Indy Roadster | Offenhauser | L4 4.5 | Firestone |
| 26 | Jim RATHMANN | Chiropractic/Lindsey Hopkins | Epperly | Indy Roadster | Offenhauser | L4 4.5 | Firestone |
| 27 | Tony BETTENHAUSEN | Novi Racing | Kurtis Kraft | 500F | Novi | L8 c 3.0 | Firestone |
| 28 | Johnnie TOLAN | Greenman-Casale | Kuzma | Indy Roadster | Offenhauser | L4 4.5 | Firestone |
| 31 | Bill CHEESBOURG | Schildmeier Seal/Donaldson | Kurtis Kraft | 500G | Offenhauser | L4 c 3.0 | Firestone |
| 31 | Cliff GRIFFITH | Seal Line | Kurtis Kraft | 500G | Offenhauser | L4 4.5 | Firestone |
| 32 | Jimmy DAVIES | Trio Brdeact Wind Allass | Kurtis Kraft | 500D | Offenhauser | L4 4.5 | Firestone |
| 33 | Billy GARRETT | Federal Engineering | Kurtis Kraft | 500E | Offenhauser | L4 4.5 | Firestone |
| 34 | Jim McWITHEY | Federal Engineering | Kurtis Kraft | 500D | Offenhauser | L4 4.5 | Firestone |
| 35 | Chuck WEYANT | Jim Robbins | Kurtis Kraft | 500G | Offenhauser | L4 4.5 | Firestone |
| 42 | Dempsey WILSON | Martin Brothers | Kurtis Kraft | ??? | Offenhauser | L4 4.5 | Firestone |
| 43 | Eddie JOHNSON | H.A. Chapman | Kurtis Kraft | 500G | Offenhauser | L4 4.5 | Firestone |
| 45 | Bill CHEESBOURG | Las Vegas Club | Kurtis Kraft | 500G | Offenhauser | L4 4.5 | Firestone |
| 48 | Marshall TEAGUE | Sumar/Chapman Root | Kurtis Kraft | 500D | Offenhauser | L4 4.5 | Firestone |
| 49 | Ray CRAWFORD | Meguiar's Mirror/Crawford | Kurtis Kraft | 500G | Offenhauser | L4 4.5 | Firestone |
| 52 | Troy RUTTMAN | John Zink | Watson | Indy Roadster | Offenhauser | L4 4.5 | Firestone |
| 54 | Paul RUSSO | Novi Racing | Kurtis Kraft | 500F | Novi | L8 c 3.0 | Firestone |
| 55 | Eddie RUSSO | Sclavi & Amos | Kurtis Kraft | 500C | Offenhauser | L4 4.5 | Firestone |
| 57 | Jimmy DAYWALT | Helse / H.H. Johnson | Kurtis Kraft | 500C | Offenhauser | L4 4.5 | Firestone |
| 58 | Andy FURCI | Ray Brady | Schroeder | ??? | Offenhauser | L4 4.5 | Firestone |
| 59 | Bud CLEMONS | Chiropractic/Lindsey Hopkins | Shilala | ??? | Offenhauser | L4 4.5 | Firestone |
| 62 | Keith ANDREWS | Giuseppe Farina | Kurtis Kraft | 500G | Offenhauser | L4 4.5 | Firestone |
| 64 | Gene FORCE | Shannon Brothers | Watts | ??? | Offenhauser | L4 4.5 | Firestone |
| 67 | Don EDMUNDS | Braund Plywood | Kurtis Kraft | 500C | Offenhauser | L4 4.5 | Firestone |
| 71 | Johnny FEDRICKS | Ed Gdula | Kurtis Kraft | 500C | Offenhauser | L4 4.5 | Firestone |
| 72 | Danny KLADIS | Morgan Engineering | Maserati | 8CTF | Maserati | L8 c 3.0 | Firestone |
| 73 | Andy LINDEN | McNamara/Kalamazoo Sports | Kurtis Kraft | 500G | Offenhauser | L4 4.5 | Firestone |
| 77 | Mike MAGILL | Dayton Steel Foundry | Kurtis Kraft | 500G | Offenhauser | L4 c 3.0 | Firestone |
| 81 | Tony BONADIES | Central Excavating/Pete Salemi | Kuzma | Indy Roadster | Offenhauser | L4 4.5 | Firestone |
| 82 | Chuck WEYANT | Central Excavating/Pete Salemi | Kuzma | Indy Roadster | Offenhauser | L4 4.5 | Firestone |
| 83 | Ed ELISIAN | McNamara/Kalamazoo Sports | Kurtis Kraft | 500D | Offenhauser | L4 4.5 | Firestone |
| 88 | Eddie SACHS | Peter Schmidt | Kuzma | Indy Roadster | Offenhauser | L4 c 3.0 | Firestone |
| 89 | Al HERMAN | Dunn Engineering | Dunn | ??? | Offenhauser | L4 4.5 | Firestone |
| 92 | Don EDMUNDS | Roy McKay | Kurtis Kraft | 500G | Offenhauser | L4 c 3.0 | Firestone |
| 95 | Bob CHRISTIE | Jones & Maley Cars | Kurtis Kraft | 500C | Offenhauser | L4 4.5 | Firestone |
| 98 | Johnnie PARSONS | J.C. Agajanian | Kuzma | Indy Roadster | Offenhauser | L4 4.5 | Firestone |