Biga may refer to:
- Biga (bread baking), a type of pre-fermentation used in Italian baking
- Biga and Busca, two Catalan political factions during the 15th century
- Biga, Çanakkale, a town and district of Çanakkale Province in Turkey
- A type of ancient Greek coin
- Biga (chariot), a two-horse chariot as used in ancient Mediterranean countries