Bee Gees' 1st is the third studio album by the Bee Gees, and their first international full-length recording after two albums distributed only in Australia and New Zealand. Bee Gees' 1st was the group's debut album for the UK Polydor label, and for the US Atco label. Bee Gees 1st was released on 14 July 1967 in the UK. On 9 August it entered the UK charts; on that same day, the album was released in the US, and it entered the US charts on 26 August.

Reflecting the group's early style, Bee Gees' 1st was a psychedelic rockand psychedelic pop album. The album cover was designed by Klaus Voormann, who had previously done the cover for Revolver by The Beatles, amongst others. Bee Gees 1st peaked at No. 7 on Billboard's Pop Albums chart and at No. 8 on the UK Albums Chart. In 2006, Reprise Records (sister label to Atco under Warner Music Group) reissued the album with both stereo and mono mixes on one disc and a bonus disc of unreleased songs and alternate takes. (This 2-CD set on Reprise corrected the fluttering on the lead-off stereo track "Turn of the Century". The mono version never had this problem.)