Adult/Child

Adult/Child (sometimes typeset as Adult Child) is an unreleased studio album by the American rock band the Beach Boys that was produced from February to June 1977. Similar to the release it was meant to follow, The Beach Boys Love You, the album is essentially a semi-autobiographical solo effort by the band's chief songwriter and producer, Brian Wilson. The title refers to a theory that one's personality can be split into "adult" and "child" modes of thinking.

The track listing consisted of seven new songs, four of which feature orchestral arrangements by Dick Reynolds, along with five older tracks recorded between 1969 and 1976. Some songs, including "It's Over Now" and "Still I Dream of It", were originally intended to be recorded by singers such as Frank Sinatra. Initially planned for issue in September 1977, the release was vetoed following the underwhelming sales of Love You. Instead, the group delivered M.I.U. Album, which shared only the song "Hey Little Tomboy", albeit in a rerecorded form.

Commentators have praised Adult/Child for its humorous and idiosyncratic "outsider" quality, also describing it as a poignant reflection of Wilson's personal life. In later years, the full album circulated widely on bootlegs and unauthorized YouTube uploads, while four additional tracks saw an official release on the 1993 box set Good Vibrations. In 2026, most of the album was officially released as part of We Gotta Groove: The Brother Studio Years, an expanded reissue of Love You.