In the Court of the Crimson King (subtitled An Observation by King Crimson) is the debut studio album by English rock band King Crimson, released on 10 October 1969 by Island Records. The album is one of the first and most influential of the progressive rock genre, where the band combined the blues influences that rock music was founded upon with elements of jazz, classical, and symphonic music.

The album reached number five on the UK Albums Chart and number 28 on the US Billboard 200, where it was certified Gold by the Recording Industry Association of America.

Tracklist

A1 21st Century Schizoid Man
A2 I Talk To The Wind
A3 Epitaph 
      I March For No Reason 
      II Tomorrow And Tomorrow

B1 Moonchild 
      I The Dream 
      II The Illusion
B2 The Court Of The Crimson King 
      I The Return Of The Fire Witch 
      II The Dance Of The Puppets