| Born | 11 August 1916 Fulham, London, England |
|---|---|
| Died | 3 February 1956 (aged 39) Brussels, Belgium |
| Formula One World Championship career | |
| Nationality |  Belgian |
| Active years | 1950 – 1953, 1955 |
| Teams | Écurie Belge, Gordini, HWM, Maserati, Ecurie Nationale Belge |
| Entries | 25 (23 starts) |
| Championships | 0 |
| Wins | 0 |
| Podiums | 0 |
| Career points | 0 |
| Pole positions | 0 |
| Fastest laps | 0 |
| First entry | 1950 British Grand Prix |
| Last entry | 1955 Dutch Grand Prix |
Octave John Claes (/kleɪz/; 11 August 1916 – 3 February 1956) was a British-born racing driver who competed for Belgium. Before his fame as a racing driver, Claes was also a jazz trumpeter and successful bandleader in Britain.