| Driver | Number | Code | DOB | Nationality |
|---|---|---|---|---|
| Driver | Number | Code | DOB | Nationality |
|---|---|---|---|---|
| Oscar Piastri | 81 | PIA | 06 April 2001 | Australian |
| Oscar Larrauri | — | — | 19 August 1954 | Argentine |
| Oswald Karch | — | — | 06 March 1917 | German |
| Otto Stuppacher | — | — | 03 March 1947 | Austrian |
| Ottorino Volonterio | — | — | 07 December 1917 | Swiss |
| Pablo Birger | — | — | 07 January 1924 | Argentine |
| Paco Godia | — | — | 21 March 1921 | Spanish |
| Paddy Driver | — | — | 13 May 1934 | South African |
| Paolo Barilla | — | — | 20 April 1961 | Italian |
| Pascal Fabre | — | — | 09 January 1960 | French |