Harold Dexter (7 October 1920 - 27 June 2000) was a British organist, Professor at the Guildhall School of Music and Drama (Head of General Musicianship Department, 1962–85). He was educated at Wyggeston Grammar School for Boys, Leicester and Corpus Christi College, Cambridge.

• 1946 -1949 Organist of St. James’ Church, Louth St James' Church, Louth
• 1949 - 1956 Organist of Holy Trinity Church, Leamington Spa
• 1956 - 1968 Organist of Southwark Cathedral

• ‘DEXTER, Harold’, Who Was Who, A & C Black, 1920–2008; online edn, Oxford University Press, Dec 2007 accessed 30 July 2011
• http://www.organ-biography.info/index.php?id=Dexter_Harold_1920