The Coull Quartet is an English string quartet that was founded at the Royal Academy of Music, London in 1974 under the guidance of renowned quartet leader, Sidney Griller. They were appointed Quartet-in-Residence by the University of Warwick in 1977, a post which they still hold today. The Quartet, which includes two of its founder members, has performed and broadcast extensively throughout the UK, and has made tours of Western Europe, the Americas, Australia, China, India and the Far East.