George Guest CBE FRCO (February 9, 1924 - November 20, 2002) was a Welsh organist and choral conductor.
George Guest was born in Bangor, Wales. His father was an organist and Guest assisted him by acting as organ blower. He became a chorister at Bangor Cathedral and subsequently at Chester Cathedral, where he took organ lessons from the sub-organist, Dr. Roland Middleton. He passed the examinations for ARCO in 1940 and FRCO in 1942. By this time he had become the organist and choirmaster of Connah's Quay parish church, Flintshire.
Being proud of his Welsh roots, from the 1970s onwards, Guest took a personal interest in the Cambridge University Welsh Society (Cymdeithas Y Mabinogi), sponsoring many of its events and providing a welcome face for Welsh students away from home.
At the age of 18 he was called up for military service, and joined the Royal Air Force, being posted to India in 1945. On leaving the services in 1947 he took up the post of sub-organist at Chester Cathedral. The cathedral organist, Malcolm Boyle, encouraged him to apply for the Organ Scholarship at St John's College, Cambridge, for which he was successful.
At Cambridge he studied under Robin Orr. In his final year as Organ Scholar, Robin Orr announced that he intended to retire, and the College Council offered the post to Guest.
Within five years of Guest becoming organist and choirmaster, the whole future of the choir at St. John's College came into question, with the proposed closure of the day school which provided the choristers. Guest, with the support of his predecessor, persuaded the College to found a Choir School.
Under George Guest's direction, the choir built up a formidable reputation, challenging the supremacy of the choir of King's College, Cambridge. Guest introduced a more "continental" tone into the choir, as George Malcolm was doing at Westminster Cathedral.