Deryck Cooke (1919-1975) was a British musicologist who was born in Leicester.

He composed a "performing version" of Mahler's unfinished 10th Symphony that has been recorded by Sir Simon Rattle with the Bournemouth Symphony Orchestra (1980) and the Berlin Philharmonic (2001).

His other works include

  • The Language of Music
  • An Introduction to "Der Ring Des Nibelungen" (audio, with extracts from Solti's recording)
  • I Saw the World End: A Study of Wagner's Ring (unfinished at his death)