Adda can refer to:
- Adda (film) is a Telugu film
- Adda (river) in Italy
- River Adda (Wales) in Wales
- Adda (South Asian), a concept/slang in South Asia, especial Bengal, also Addabazi
- Adda (Nigeria), an archaeological site in Nigeria
- Adda Corporation, a Taiwanese fan manufacturer
- Adda bar Ahavah, the name of two rabbis of the Talmud
- Adda of Bernicia, the third known ruler of the Anglo-Saxon Kingdom of Bernicia
- Adda ONG, the Association Defensa Derechos Animal (Defending Animal Rights)
- Adda Motiram, a village in India