Gambetta may refer to:
- People
- Beppe Gambetta, Italian musician
- Diego Gambetta, Italian sociologist
- Léon Gambetta (1838-1882), French statesman
- Schubert Gambetta (1920-1991), Uruguayan footballer
- Other uses
- Gambetta (Paris Métro)
- French armoured cruiser Léon Gambetta, ship of the French Navy, 1901–1915
- Léon Gambetta class cruiser, class of ships of the French Navy