Hide teams with less than 10 entries
Hide teams who only participated in Indy 500
Ignore non-championship races
| No | Team | Races | Active Years |
|---|
| 3 | A E Dean (Indy only) | 5 |
1953–1955, 1957, 1959 |
| 4 | A J Watson (Indy only) | 1 |
1950 |
| 5 | AAW Racing Team | 6 |
1974 |
| 6 | Ace Garage - Rotherham | 1 |
1959 |
| 7 | ADAC (Non-champ only) | 3 |
1954 |
| 8 | Adolf Brudes | 1 |
1952 |
| 9 | Adrian Russell (Non-champ only) | 8 |
1976–1977 |
| 10 | AFM | 1 |
1952 |
| 11 | AGS | 81 |
1976, 1986–1991 |
| 12 | Aim Racing (Non-champ only) | 1 |
1977 |
| 13 | Alan Baillie (Non-champ only) | 1 |
1977 |
| 14 | Alan Brown | 2 |
1954, 1959 |
| 15 | Alastair Birrell (Non-champ only) | 5 |
1955–1956 |
| 16 | Albert Wake (Non-champ only) | 1 |
1954 |
| 17 | Alberto Uria | 3 |
1955–1956 |
| 18 | Alex McMillan (Non-champ only) | 3 |
1955–1956 |
| 19 | Alfa Romeo | 215 |
1950–1951, 1979–1985, 2019–2023 |
| 20 | Alfred Dattner | 1 |
1952 |
| 21 | Allan Kayes (Non-champ only) | 9 |
1976–1977 |
| 22 | Allied Polymer Group | 1 |
1974 |
| 23 | Alpine | 95 |
2021–2025 |
| 24 | Amon | 5 |
1966, 1974 |
| 25 | Andrea Moda Formula | 9 |
1992 |
| 26 | André Guelfi | 1 |
1958 |
| 27 | André Pilette | 1 |
1963 |
| 28 | André Simon | 3 |
1955–1956 |
| 29 | Andy Barton (Non-champ only) | 4 |
1976–1977 |
| 30 | Anglo-American Equipe | 3 |
1962 |
| 31 | Ansted Rotary Corp (Indy only) | 3 |
1956–1957, 1960 |
| 32 | Anthony Brooke (Non-champ only) | 5 |
1954 |
| 33 | Antique Automobiles / Colin Crabbe Racing | 14 |
1969–1970 |
| 34 | Antonio Branca | 2 |
1950–1951 |
| 35 | Antonio Creus | 1 |
1960 |
| 36 | Apollon | 1 |
1977 |
| 37 | Applied Racing Techniques (Non-champ only) | 4 |
1976 |
| 38 | Archie Bryde | 3 |
1952–1953 |
| 39 | Ardmore Racing (Non-champ only) | 6 |
1976 |
| 40 | Arrows | 395 |
1978–2002 |
| 41 | Arthur Legat | 3 |
1952–1954 |
| 42 | Arthur Owen | 1 |
1960 |
| 43 | Arzani-Volpini | 2 |
1955 |
| 44 | Aston | 3 |
1952 |
| 45 | Aston Martin | 101 |
1959–1960, 2021–2025 |
| 46 | Atlantic Stable | 2 |
1953 |
| 47 | ATS | 119 |
1976–1984 |
| 48 | ATS (Ita) | 5 |
1963 |
| 49 | Auto Motor und Sport | 13 |
1970 |
| 50 | Automobiles Bugatti | 1 |
1956 |
| 51 | Autosport Team Wolfgang Seidel | 6 |
1953, 1960, 1962 |
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