Hanno may refer to:
- Hanno, Saitama, Honshū, Japan
- Hanno (crater), a lunar crater
- Hanno (elephant), the pet white elephant of Pope Leo X
People named Hanno:
- Several ancient Carthaginians, including:
-
- Hanno the Elder (died 204 BC), Carthaginian general
- Hanno I the Great (4th century BC), Carthaginian admiral
- Hanno II the Great (3rd century BC), wealthy Carthaginian aristocrat
- Hanno III the Great (2nd century BC), ultra-conservative Carthaginian politician
- Hanno the Navigator, Carthaginian explorer
- Hanno, son of Hannibal, Carthaginian general in the First Punic War
- Hanno, Messana garrison commander, Carthaginian general in The First Punic War
- Hanno, son of Bomilcar, Carthaginian officer in the Second Punic War
- Hanno Balitsch (born 1981), German footballer
- Hanno Drechsler (1931-2003), political scientist
- Hanno Möttölä (born 1976), Finnish professional basketball player
- Hanno Pöschl (born 1949), Austrian television actor
- Hanno Rund (1925-1993), mathematician
- Hanno, fictional character in The Boat of a Million Years, an immortal Phoenician living to our times and beyond