Birthday: 1973-03-15
Age: 51
Place of Birth: Tōkyō, Japan
Known For: Acting
Uko Tachibana (橘 U子, Tachibana Yūko, March 15, 1973) is a Japanese voice actress from Tokyo. Formerly affiliated with Gekidan 21 Seiki Fox, she is currently affiliated with Kenyu Office. Her old stage name is Mari Koshi (合志 真理, Kōshi Mari).