| Name | Country | Years | Races | Wins | Championships |
|---|---|---|---|---|---|
| AAW Racing Team | 1974 | 1 | 0 | 0 | |
| AHM Bryde | 1952 | 2 | 0 | 0 | |
| ATS Wheels | Germany | 0 | 0 | 0 | |
| Adams | 1950 | 1 | 0 | 0 | |
| Adolf Brudes | 1952 | 1 | 0 | 0 | |
| Aherns Racing Team | 1968 | 1 | 0 | 0 | |
| Alberto Uria | 1955-1956 | 2 | 0 | 0 | |
| Alex von Frankenhausen Motorenbau | Germany | 1952-1953 | 2 | 0 | 0 |
| Alfa Romeo | Italy | 1950-1951,1979-1985 | 110 | 11 | 0 |
| Alfred Dattner | 1952 | 1 | 0 | 0 | |
| Alpine | France | 2002-2011,2016-2024 | 367 | 21 | 2 |
| Amon | Great Britain | 1974 | 1 | 0 | 0 |
| Andre Simon | 1956 | 1 | 0 | 0 | |
| Andrea Moda | Italy | 1992 | 1 | 0 | 0 |
| Anglo-American Equipe | 1962 | 2 | 0 | 0 | |
| Antique Automobiles | 1969 | 5 | 0 | 0 | |
| Antonio Branca | 1950-1951 | 2 | 0 | 0 | |
| Antonio Creus | 1960 | 1 | 0 | 0 | |
| Arrows | Great Britain | 1978-1990,1997-2002 | 290 | 0 | 0 |
| Arthur Legat | 1952-1953 | 2 | 0 | 0 | |
| Arthur Owen | 1960 | 1 | 0 | 0 | |
| Aston Martin | India | 2008-2024 | 340 | 1 | 0 |
| Aston-Butterworth | Great Britain | 1952 | 2 | 0 | 0 |
| Auto Technisches Spezialzubehor | 1977-1984 | 99 | 0 | 0 | |
| Automobiles Gonfaronaise Sportive | France | 1986-1991 | 47 | 0 | 0 |
| Automobili Turismo e Sport | 1963 | 5 | 0 | 0 | |
| Automobili Turismo e Sport | Italy | 0 | 0 | 0 |
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