1923 Grand Prix season Other Grands Prix Other Grands Prix

| Name_ | Circuit | Date_ | Winning_driver | Winning_constructor | Report |
|---|---|---|---|---|---|
| Targa Florio | Madonie | 15 April | Ugo Sivocci | Alfa Romeo | Report |
| Cremona Circuit | Cremona | 6 May | Antonio Ascari | Alfa Romeo | Report |
| Mugello Circuit | Mugello | 10 June | Gastone Brilli-Peri | Steyr | Report |
| Savio Circuit | Ravenna | 17 June | Enzo Ferrari | Alfa Romeo | Report |
| San Sebastián Grand Prix | Lasarte | 25 July | Albert Guyot | Rolland-Pilain | Report |
| Coppa Montenero | Montenero | 26 August | Mario Razzauti | Ansaldo | Report |
| Spanish Grand Prix | Sitges-Terramar | 28 October | Albert Divo | Sunbeam | Report |
| Garda Circuit | Salò | 25 November | Guido Meregalli | Diatto | Report |