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 |
|---|
| 1 | Acer | 17 |
2001 |
| 2 | AFM (Non-champ only) | 7 |
1949, 1952, 1954 |
| 3 | Alfa Romeo | 331 |
1945–1954, 1957, 1960–1971, 1976–1987 |
| 4 | Allard (Non-champ only) | 2 |
1952, 1954 |
| 5 | Alta | 159 |
1946–1961 |
| 6 | Alvis (Non-champ only) | 4 |
1947, 1952, 1954 |
| 7 | Amilcar (Non-champ only) | 13 |
1945–1947, 1950 |
| 8 | Andrew (Non-champ only) | 1 |
1950 |
| 9 | Appleton (Non-champ only) | 1 |
1946 |
| 10 | Ardun (Non-champ only) | 1 |
1952 |
| 11 | Arrows | 32 |
1998–1999 |
| 12 | Asiatech | 34 |
2001–2002 |
| 13 | Aston Martin | 29 |
1945–1947, 1950, 1952–1954, 1956, 1959–1962 |
| 14 | ATS (Non-champ only) | 1 |
1967 |
| 15 | ATS (Ita) | 8 |
1963–1964, 1966–1967 |
| 16 | Ausper (Non-champ only) | 1 |
1961 |
| 17 | Austin (Non-champ only) | 2 |
1960–1961 |
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