Endless Harmony Soundtrack is an anthology album of previously unheard material by The Beach Boys, originally released by Capitol Records in August 1998.

The Endless Harmony project was undertaken shortly after the death of founding member Carl Wilson, who died of lung cancer in February 1998.

Both Love and Bruce Johnston (with their accompanying concert act) continued to perform live as The Beach Boys until all five surviving members reunited for their 50th anniversary in 2012.

The Endless Harmony Soundtrack itself is patterned like The Beatles' Anthology albums, with alternate versions and live renditions of songs, as well as previously unreleased ones.

Although the album was not a commercial success, it did encourage Capitol Records to issue a more comprehensive archival package in Hawthorne, CA, released in May 2001.