| Competition: | Serie A |
| Season: | 1939–40 |
| Winners: | Ambrosiana-Inter 5th title |
| Relegated: | Liguria Modena |
| League Topscorer: | Aldo Boffi (24 goals) |
| Matches: | 240 |
| Total Goals: | 625 |
| Prevseason: | 1938–39 |
| Nextseason: | 1940–41 |
The 1939–40 Serie A season was won by Ambrosiana-Inter.
Fiorentina and Venezia had been promoted from Serie B.
| Rank | Player | Club | Goals |
|---|---|---|---|
| 1 |  Aldo Boffi | Milano | 24 |
| 2 | Umberto Guarnieri | Ambrosiana-Inter | 15 |
| 3 | Ettore Puricelli | Bologna | 14 |
| Carlo Reguzzoni | Bologna | ||
| 5 | Genova 1893 | 13 | |
| Guglielmo Gabetto | Juventus | ||
| 7 | Attilio Demaría | Ambrosiana-Inter | 12 |
| 8 | Bruno Arcari | Genova 1893 | 11 |
| 9 | Vittorio Sentimenti | Modena | 10 |
| Giovanni Alberti | Venezia | ||
 Michelangelo Pantò | Roma | ||
| Danilo Michelini | Torino |