Sunna may refer to:
- Sunna (band), a British rock band from the early 2000s
- Sunna (Saxon chief), a Saxon chief
- Kim Sunna, a Swedish professional ice hockey player
- Sól (sun) (Sunna), Germanic goddess/personification of the Sun in Old High German
- Sunnah, a part of Islamic law
- Sunne, Sweden, a municipality in Sweden
- Sunni Islam, a branch of Islam