Other
- Sena (moth), a moth genus
- Sena, Iran, a village in Bushehr Province, Iran
- Sena (wine)
- Sena language
- Servicio Nacional de Aprendizaje is a Colombian National education institution
- Shanti Sena or "Peace army", made up of Gandhi's followers in India
- Shiv Sena, a political party in India
- Sena (record company), Icelandic record company
- Sena (storage), Sun Enterprise Network Array
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