Hanno is a name that can refer to the following entities:
- Hanno the elephant, Pope Leo X's pet
- Hanno the Elder, Carthaginian general
- Hanno the Great, Carthaginian general
- Hanno the Navigator, Carthaginian explorer
- Hanno the Rab, Carthaginian politician
- Hanno von Sangerhausen, great master of the Teutonic Knights
- Hanno crater, a crater in the Moon
- Hanno, Saitama, a town in Japan