| Name | Country | Years | Races | Wins | Championships |
|---|---|---|---|---|---|
| Lago-Talbot | France | 1950 | 4 | 0 | 0 |
| Lamborghini | Italy | 1991 | 6 | 0 | 0 |
| Lancia | Italy | 1954-1955 | 4 | 0 | 0 |
| Langley | 1950 | 1 | 0 | 0 | |
| Larrousse | France | 1987-1994 | 126 | 0 | 0 |
| Lawson Organisation | 1963 | 1 | 0 | 0 | |
| Lec | Great Britain | 1973,1977 | 7 | 0 | 0 |
| Leslie D. Hawthorn | 1952 | 4 | 0 | 0 | |
| Leslie Marr | 1954 | 1 | 0 | 0 | |
| Lesovsky | 1950-1953,1956-1960 | 9 | 0 | 0 | |
| Lexington Racing | 1975-1976 | 2 | 0 | 0 | |
| Leyton House-llmor | Great Britain | 1990-1991 | 30 | 0 | 0 |
| Life | Italy | 1990 | 0 | 0 | 0 |
| Ligier | France | 1966-1967,1976-1996 | 337 | 9 | 0 |
| Lola | Great Britain | 1963,1997 | 5 | 0 | 0 |
| Lotus | Great Britain | 2012-2015 | 77 | 2 | 0 |
| Louis Chiron | 1953 | 2 | 0 | 0 | |
| Louise Bryden-Brown | 1961 | 2 | 0 | 0 | |
| Luigi Piotti | 1956-1957 | 7 | 0 | 0 | |
| Luki Botha | 1967 | 1 | 0 | 0 | |
| Lyncar | Great Britain | 1975 | 1 | 0 | 0 |
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