Adult (大人（アダルト）) is the second studio album by Japanese alternative rock band Tokyo Jihen, released on January 25, 2006 in Japan through Toshiba EMI/ Virgin Music.

The album was produced by the band and Japanese recording engineer Uni Inoue.

[1] Adult marked the debut for guitarist Ukigumo and keyboardist Ichiyō Izawa, who joined Tokyo Jihen after the departure of previous members Mikio Hirama and H Zett M (Masayuki Hiizumi).

Ringo Sheena, Ichiyō Izawa and Ukigumo played a key role in this album and arranged songs while arguing.

[2] All lyrics are written by Sheena; all music is composed by Sheena and arranged by Tokyo Jihen, except where notedTokyo Jihen Additional personnel Guest musicians