Live at the Marquee is a live album by the band King Crimson derived from a low-quality audience bootleg recorded at London's Marquee Club in July 1969. It was the first release from the King Crimson Collector's Club, in October 1998, and includes liner notes by the band's guitarist, Robert Fripp.
The last track, recorded at Fairfield Halls, Croydon a few months later, is the only known recording of the song "Trees", which includes music that would later appear in both "A Man, A City"/"Pictures of a City" from In the Wake of Poseidon and "Wishbone Ascension" from McDonald and Giles. This track is sourced from an even lower quality bootleg than the Marquee recording.