Onana is a surname. Notable people with the surname include:
- Amadou Onana, Belgian footballer
- André Onana, Cameroonian footballer
- Elie Onana, Cameroonian footballer
- Hervé Ndjana Onana, Cameroonian footballer
- Jacques Onana, Cameroonian footballer
- Jean Onana, Cameroonian footballer
- Jules Onana, Cameroonian footballer
- Moshe Onana, Israeli footballer
- Nelson Onana, Belgian field hockey player
- Raphaël Onana, French-Cameroonian soldier