"OH!" (オー!, Ō!) is the 22nd single of Japanese duo Pink Lady and last official single before their disbandment. The single was released on March 5, 1981. it was written by Shunichi Tokura and Yū Aku, who were behind the duo's most successful hits during the 1970s. The song sold 200,000 copies. On March 29, 1981, the duo performed the song on the 500th episode of Star Tanjō!, five years after they made their debut in the talent show. A re-recorded version of the song was included on the 2-disc greatest hits release, INNOVATION, released in December 2010.