John Alldis (10 August 1929 – 20 December 2010) was an English chorus-master and conductor. 　　After his education at Felsted, Alldis studied as a choral scholar under Boris Ord at King's College, Cambridge, from 1949 to 1952. 　　After leaving Cambridge University, Alldis quickly became highly regarded as a choral conductor. In 1966, the London Symphony Orchestra engaged him to form and direct its first standing choral group. However, he switched to the London Philharmonic Choir in 1969, with which he remained until 1982, preparing choruses for many celebrated performances with Adrian Boult, Otto Klemperer, Leopold Stokowski, Colin Davis, Bernard Haitink, Karl Richter, Georg Solti, and Zubin Mehta.