The Ladder is the eighteenth studio album by the English progressive rock band Yes. It was released in September 1999 on Eagle Records and is their only studio album recorded with six full-time members, following the addition of guitarist Billy Sherwood and keyboardist Igor Khoroshev.

The band started on the album in 1998 while touring Open Your Eyes (1997); during a stop in Vancouver, Canada they agreed to work with Canadian producer Bruce Fairbairn, relocating there in early 1999 to record the album at Armoury Studios. During the album's mixing stage, Fairbairn died unexpectedly and Yes dedicated the album to him.

The Ladder received a warm reception from critics who saw the album as a return to creative form from the band. It reached a peak of No. 36 on the UK Albums Chart and No. 99 on the US Billboard 200. Three singles were released, "Homeworld (The Ladder)", "Lightning Strikes", and "If Only You Knew"; the former was used in the 1999 real-time strategy PC game Homeworld by Relic Entertainment. Yes supported the album with their 1999–2000 world tour, after which Sherwood left the band.