1928 Grand Prix season Other Grands Prix Other Grands Prix

| Name_ | Circuit | Date_ | Winning_driver | Winning_constructor | Report |
|---|---|---|---|---|---|
| Burgundy Grand Prix | Dijon | 16 May | Jannine Jennky | Bugatti | Report |
| Etna Cup | Catania | 20 May | Baconin Borzacchini | Maserati | Report |
| Tunis Grand Prix | Le Bardo | 3 June | Marcel Lehoux | Bugatti | Report |
| Mugello Circuit | Mugello | 3 June | Emilio Materassi | Talbot | Report |
| Rome Grand Prix | Tre Fontane | 12 June | Louis Chiron | Bugatti | Report |
| Picardy Grand Prix | Péronne | 10 June | Henry Auber | Bugatti | Report |
| Thuin Circuit | Thuin | 10 June | Delzaert | Bugatti | Report |
| Cremona Circuit | Cremona | 24 June | Luigi Arcangeli | Talbot | Report |
| Grand Prix de la Marne | Reims-Gueux | 8 July | Louis Chiron | Bugatti | Report |
| San Sebastián Grand Prix | Lasarte | 25 July | Louis Chiron | Bugatti | Report |
| Coppa Acerbo | Pescara | 4 August | Giuseppe Campari | Alfa Romeo | Report |