- A transliteration of the Russian female given name Татьяна (Tatʹjana).
- A female given name.
- In regular use among English speakers since the end of the twentieth century.
Popular saints' name in the Eastern Orthodox Church, feminine of Latin Tatianus, derivative of Tatius, a Roman family name of obscure origin. Modern English usage is derived from the Russian form Татьяна (Tatʹjana).