Tyyne is a Finnish female given name, derived from the Finnish word tyyni meaning "calm, serene". It originated as a late 19th-century coinage, reflecting the broader trend of creating names from native Finnish vocabulary during the national romantic period. The name was particularly popular in the early 20th century in Finland, emerging during a time when many Finnish names were crafted to emphasize peace and nature. Tyyne has also been adopted as the Finnish phonetic alphabet word for the letter T.