Hide engine manufacturers with less than 10 entries
Hide engine manufacturers who only participated in Indy 500
Ignore non-championship races
| No | Engine Manufacturer | Races | Active Years |
|---|
| 77 | Hart | 203 |
1976–1986, 1993–1997 |
| 78 | Healey (Non-champ only) | 1 |
1951 |
| 79 | Hillman (Non-champ only) | 1 |
1960 |
| 80 | Holden (Non-champ only) | 4 |
1960–1962 |
| 81 | Honda | 488 |
1964–1968, 1983–1992, 2000–2008, 2015–2021, 2026 |
| 82 | Honda RBPT | 70 |
2023–2025 |
| 83 | Hudson (Non-champ only) | 3 |
1949, 1952 |
| 84 | Humber (Non-champ only) | 1 |
1960 |
| 85 | HW (Non-champ only) | 1 |
1949 |
| 86 | HWM (Non-champ only) | 1 |
1954 |
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