In the Court of the Crimson King: King Crimson at 50 is a 2022 music documentary film about the British progressive rock band King Crimson. It was directed and co-produced by Toby Amies. The film follows the final eight-piece incarnation of the band throughout their 50th anniversary tour from 2018 until 2020, complemented with interviews with past members and archival footage of TV broadcasts and concert performances throughout their years of activity.

The documentary features former and current members of the band such as Adrian Belew, Bill Bruford, Mel Collins, Michael Giles, Trey Gunn, Gavin Harrison, Jakko Jakszyk, Tony Levin, Pat Mastelotto, Jamie Muir, Pete Sinfield, David Singleton, Jeremy Stacey and Ian McDonald. The main action, however, revolves around the personality of co-founder and bandleader Robert Fripp, his personal philosophy and relationships with bandmates. Significant time is also dedicated to Bill Rieflin and his involvement in the band whilst suffering from cancer; the film was dedicated jointly to Rieflin, who died in 2020, and Amies' mother Elizabeth. The film also includes interviews with several fans of the band, most notably, Norwegian nun, sister Dana Benedicta from Dominicaines de Notre-Dame de Grâce, Oslo.

The film premiered on March 14, 2022, at South by Southwest film festival and was positively received by the critics.