Bena can refer to:
- Bena (ethnic group), ethnic group in Tanzania
- Bena language, language in the Bantu group, spoken by the Bena people
- Bena (moth), genus of moth in the Nolidae family
- Bena, California, community in Kern County, California, United States
- Bena, Minnesota, city in Cass County, Minnesota, United States
- Bena, Victoria
- Diphenhydramine, by the trade name Bena