1929 Grand Prix season
The 1929 Grand Prix season was dominated by Italian constructors. Both Alfa Romeo and Bugatti won races, with "W Williams" and Louis Chiron being the dominant drivers.
The World Manufacturers' Championship was planned on seven races. Three of them were converted to sport-cars races while British and European Grands Prix were not held. Since the last one was required, the championship was cancelled.
Season review
Grandes Épreuves
| Date | Name | Circuit | Winning driver | Winning constructor | Report |
| 30 May |  Indianapolis 500 | Indianapolis | Ray Keech | Miller | Report |
| 30 June |  French Grand Prix | Le Mans |  "W Williams" | Bugatti | Report |
The Indianapolis 500 counted towards the 1929 AAA Championship Car title.
Other Grands Prix
| Date | Name | Circuit | Winning driver | Winning constructor | Report |
| 24 March |  Tripoli Grand Prix | Tripoli | Gastone Brilli-Peri | Talbot | Report |
| 1 April | Antibes Grand Prix | Garoupe |  Mario Lepori | Bugatti | Report |
| 7 April | Riviera Circuit | Cannes | Edward Bret | Bugatti | Report |
| 7 April | Algerian Grand Prix | Staouéli | Marcel Lehoux | Bugatti | Report |
| 14 April |  Monaco Grand Prix | Monte Carlo | "W Williams" | Bugatti | Report |
| 21 April | Alessandria Circuit | Bordino | Achille Varzi | Alfa Romeo | Report |
| 5 May | Coppa Florio | Madonie | Albert Divo | Bugatti | Report |
| 5 May | Targa Florio | Madonie | Albert Divo | Bugatti | Report |
| 9 May | Burgundy Grand Prix | Dijon | Philippe de Rothschild | Bugatti | Report |
| 19 May |  Grand Prix des Frontières | Chimay | Goffredo Zehender | Alfa Romeo | Report |
| 26 May | Rome Grand Prix | Tre Fontane | Achille Varzi | Alfa Romeo | Report |
| 2 June | Pozzo Circuit | Verona | Giovanni Alloatti | Bugatti | Report |
| 9 June | Mugello Circuit | Mugello | Gastone Brilli-Peri | Talbot | Report |
| 9 June | Picardy Grand Prix | Péronne | Henry Auber | Bugatti | Report |
| 16 June | Lyon Grand Prix | Quincieux |  Hans Simons | Bugatti | Report |
| 23 June | Thuin Circuit | Thuin | Freddy Charlier | Bugatti | Report |
| 7 July | Grand Prix de la Marne | Reims | Philippe Étancelin | Bugatti | Report |
| 7 July | Dieppe Grand Prix | Dieppe | René Dreyfus | Bugatti | Report |
| 7 July | Camaiore Circuit | Camaiore | Renato Balestrero | Bugatti | Report |
| 13 July |  Irish Grand Prix | Dublin |  Boris Ivanowski | Alfa Romeo | Report |
| 14 July |  German Grand Prix | Nürburgring | Louis Chiron | Bugatti | Report |
| 21 July | Coppa Montenero | Montenero | Achille Varzi | Alfa Romeo | Report |
| 25 July |  San Sebastián Grand Prix | Lasarte | Louis Chiron | Bugatti | Report |
| 18 August | Grand Prix du Comminges | Saint-Gaudens | Philippe Étancelin | Bugatti | Report |
| 22 August | La Baule Grand Prix | La Baule | Philippe Étancelin | Bugatti | Report |
| 15 September | Monza Grand Prix | Monza | Achille Varzi | Alfa Romeo | Report |
| 29 September | Cremona Circuit | Cremona | Gastone Brilli-Peri | Alfa Romeo | Report |
| 17 November | Tunis Grand Prix | Le Bardo | Gastone Brilli-Peri | Alfa Romeo | Report |