Richard Emsley (born December 1951 in Goole, Yorkshire) is a British composer, sometimes associated with the New Complexity school.
Emsley initially studied with Arnold Whittall at University College, Cardiff, after which he moved to London, where he still lives.
He attended Peter Maxwell Davies' composition classes at the Dartington Summer School of Music, and co-founded the Cardiff Composers' Ensemble while a student there.
In 2002, Métier released a CD of Emsley's music, entitled Flowforms.
He was the first ever user of the notation software Sibelius, having tested it extensively before it was released, and engraved the first score published using Sibelius: Antara by George Benjamin (published by Faber Music).