Hide drivers with less than 10 entries
Hide drivers who only participated in Indy 500
Include non-championship races
No | Driver | Races | Active Years |
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573 | O'Brien, Robert | 1 |
1952 |
574 | O'Connor, Pat (Indy only) | 5 |
1954–1958 |
575 | O'Sullivan, Zak | 1 |
2023 |
576 | O'Ward, Patricio | 2 |
2022–2023 |
577 | Ocon, Esteban | 144 |
2016–2018, 2020–2024 |
578 | Oliver, Jackie | 51 |
1968–1973, 1977 |
579 | Ongais, Danny | 6 |
1977–1978 |
580 | Oppitzhauser, Karl | 1 |
1976 |
581 | Owen, Arthur | 1 |
1960 |
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