| 1 | Tony BETTENHAUSEN | Hoover Motor Express | Epperly | Indy Roadster | Offenhauser | L4 4.5 | Firestone |
| 3 | Johnny THOMSON | Racing Associates | Lesovsky | ??? | Offenhauser | L4 4.5 | Firestone |
| 5 | Rodger WARD | Leader Card 500 | Watson | Indy Roadster | Offenhauser | L4 4.5 | Firestone |
| 6 | Jimmy BRYAN | Belond AP/George Salih | Epperly | Indy Roadster | Offenhauser | L4 4.5 | Firestone |
| 7 | Jud LARSON | Bowes Seal Fast/Bignotti | Kurtis Kraft | 500H | Offenhauser | L4 4.5 | Firestone |
| 8 | Len SUTTON | Wolcott Memorial Racing | Lesovsky | ??? | Offenhauser | L4 4.5 | Firestone |
| 9 | Don BRANSON | Bob Estes | Phillips | ??? | Offenhauser | L4 4.5 | Firestone |
| 10 | AJ FOYT | Dean Van Lines | Kuzma | Indy Roadster | Offenhauser | L4 4.5 | Firestone |
| 12 | Ralph LIGUORI | El Dorado Italia | Maserati | 420M | Maserati | V8 | Firestone |
| 15 | Don FREELAND | Jim Robbins | Kurtis Kraft | 500G | Offenhauser | L4 4.5 | Firestone |
| 16 | Jim RATHMANN | Simoniz/Lindsey Hopkins | Watson | Indy Roadster | Offenhauser | L4 4.5 | Firestone |
| 17 | Johnny KAY | Safety Auto Glass | Kurtis Kraft | 500C | Offenhauser | L4 4.5 | Firestone |
| 19 | Eddie JOHNSON | Bryant Heating | Kurtis Kraft | 500G | Offenhauser | L4 4.5 | Firestone |
| 21 | Earl MOTTER | Dean Van Lines | Kuzma | Indy Roadster | Offenhauser | L4 4.5 | Firestone |
| 24 | Jack TURNER | Travelon Trailer / Ernest Ruiz | Christensen | ??? | Offenhauser | L4 4.5 | Firestone |
| 25 | Bill CHEESBOURG | Hardwood Door | Kurtis Kraft | 500G | Offenhauser | L4 4.5 | Firestone |
| 33 | Johnny BOYD | Bowes Seal Fast/Bignotti | Epperly | Indy Roadster | Offenhauser | L4 4.5 | Firestone |
| 34 | Dempsey WILSON | Novi Racing | Kurtis Kraft | 500F | Novi | L8 c 3.0 | Firestone |
| 37 | Duane CARTER | Smokey Yunick | Kurtis Kraft | 500H | Offenhauser | L4 4.5 | Firestone |
| 38 | Paul RUSSO | Novi Racing | Kurtis Kraft | 500F | Novi | L8 c 3.0 | Firestone |
| 39 | Rex EASTON | Massaglia Hotels | Lesovsky | ??? | Offenhauser | L4 4.5 | Firestone |
| 41 | Jimmy DAVIES | Sumar/Chapman Root | Kurtis Kraft | 500G | Offenhauser | L4 4.5 | Firestone |
| 41 | Ralph LIGUORI | Sumar/Chapman Root | Kurtis Kraft | 500G | Offenhauser | L4 4.5 | Firestone |
| 42 | Bill HOMEIER | Go-Kart/C.O. Prather | Kurtis Kraft | 500G | Offenhauser | L4 4.5 | Firestone |
| 43 | Johnnie TOLAN | H.A. Chapman | Lesovsky | ??? | Offenhauser | L4 4.5 | Firestone |
| 44 | Eddie SACHS | Peter Schmidt | Kuzma | Indy Roadster | Offenhauser | L4 4.5 | Firestone |
| 45 | Paul RUSSO | Bardahl/Fred Gerhardt | Kurtis Kraft | 500G | Offenhauser | L4 4.5 | Firestone |
| 47 | Chuck WEYANT | Roy McKay | Kurtis Kraft | 500G | Offenhauser | L4 4.5 | Firestone |
| 48 | Bobby GRIM | Sumar/Chapman Root | Kurtis Kraft | 500G | Offenhauser | L4 4.5 | Firestone |
| 49 | Ray CRAWFORD | Meguiar's Mirror/Crawford | Elder | ??? | Offenhauser | L4 4.5 | Firestone |
| 51 | Bob CORTNER | Cornis Engineering | Cornis | ??? | Offenhauser | L4 4.5 | Firestone |
| 52 | Jud LARSON | Leader Cards Inc | Watson | Indy Roadster | Offenhauser | L4 4.5 | Firestone |
| 53 | Bill CHEESBOURG | Greenman-Casale | Kuzma | Indy Roadster | Offenhauser | L4 4.5 | Firestone |
| 54 | Don EDMUNDS | Bill Forbes Racing | Kuzma | Indy Roadster | Offenhauser | L4 4.5 | Firestone |
| 55 | Gene FORCE | Sclavi & Amos | Kuzma | Indy Roadster | Offenhauser | L4 4.5 | Firestone |
| 55 | Jim PACKARD | Sclavi & Amos | Kuzma | Indy Roadster | Offenhauser | L4 4.5 | Firestone |
| 57 | Al KELLER | Helse / H.H. Johnson | Kuzma | Indy Roadster | Offenhauser | L4 4.5 | Firestone |
| 57 | Jerry UNSER | Helse / H.H. Johnson | Kuzma | Indy Roadster | Offenhauser | L4 4.5 | Firestone |
| 58 | Jim McWITHEY | Ray Brady | Kurtis Kraft | 500C | Offenhauser | L4 4.5 | Firestone |
| 62 | Bill HOMEIER | Rusco Battery Cable | Kurtis Kraft | 500G | Offenhauser | L4 4.5 | Firestone |
| 64 | Pat FLAHERTY | John Zink | Watson | Indy Roadster | Offenhauser | L4 4.5 | Firestone |
| 65 | Bob CHRISTIE | Federal Engineering | Kurtis Kraft | 500C | Offenhauser | L4 4.5 | Firestone |
| 66 | Jimmy DAYWALT | Federal Engineering | Kurtis Kraft | 500E | Offenhauser | L4 4.5 | Firestone |
| 69 | Shorty TEMPLEMAN | Frank Arciero | Kurtis Kraft | 500C | Maserati | V8 | Firestone |
| 71 | Chuck ARNOLD | Hall-Mar | Kurtis Kraft | ??? | Offenhauser | L4 4.5 | Firestone |
| 72 | Chuck ARNOLD | Speed International | Kurtis Kraft | 500C | Offenhauser | L4 4.5 | Firestone |
| 73 | Dick RATHMANN | McNamara/Kalamazoo Sports | Watson | Indy Roadster | Offenhauser | L4 4.5 | Firestone |
| 74 | Bob VEITH | John Zink | Moore | ??? | Offenhauser | L4 4.5 | Firestone |
| 77 | Mike MAGILL | Dayton Steel Foundry | Sutton | ??? | Offenhauser | L4 4.5 | Firestone |
| 78 | Gene FORCE | Midwest Manufacturing | Kurtis Kraft | 500D | Offenhauser | L4 4.5 | Firestone |
| 78 | Eddie RUSSO | Midwest Manufacturing | Kurtis Kraft | 500D | Offenhauser | L4 4.5 | Firestone |
| 78 | Bob SCHROEDER | Midwest Manufacturing | Kurtis Kraft | 500D | Offenhauser | L4 4.5 | Firestone |
| 82 | Chuck RODEE | Central Excavating/Pete Salemi | Kuzma | Indy Roadster | Offenhauser | L4 4.5 | Firestone |
| 82 | Dempsey WILSON | Central Excavating/Pete Salemi | Kuzma | Indy Roadster | Offenhauser | L4 4.5 | Firestone |
| 87 | Red AMICK | Wheeler-Foutch | Kurtis Kraft | 500C | Offenhauser | L4 4.5 | Firestone |
| 88 | Gene HARTLEY | Drewry's/R.T. Marley | Kuzma | Indy Roadster | Offenhauser | L4 4.5 | Firestone |
| 89 | Al HERMAN | Dunn Engineering | Dunn | ??? | Offenhauser | L4 4.5 | Firestone |
| 91 | Johnny MOORHOUSE | Binter | Kurtis Kraft | 500G | Offenhauser | L4 4.5 | Firestone |
| 92 | Jack ENSLEY | McKay's Bulldog | Kurtis Kraft | 500G | Offenhauser | L4 4.5 | Firestone |
| 93 | Eddie RUSSO | McKay's Bulldog | Kurtis Kraft | 500G | Offenhauser | L4 4.5 | Firestone |
| 98 | Chuck DAIGH | J.C. Agajanian | Kuzma | Indy Roadster | Offenhauser | L4 4.5 | Firestone |
| 98 | Eddie RUSSO | J.C. Agajanian | Kuzma | Indy Roadster | Offenhauser | L4 4.5 | Firestone |
| 99 | Paul GOLDSMITH | Norman Demler | Epperly | Indy Roadster | Offenhauser | L4 4.5 | Firestone |