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Sunna, a female Viking name. A number of English place names are derived from this name including Sonning (historically spelled "Sunning"), Sonning Eye, Sunbury, Sunningdale, Sunninghill and Sunningwell, many close to the River Thames.

Sunne, a municipality in Sweden.

Frau Sonne, a Scandinavian sun goddess, also known as Sol.

Sunnah, a part of Islamic law.

Sunna (band), a defunct British rock band active in the early 2000s.