Walter Galpin Alcock Sheet Music
- Born: 29th December 1861
- Died: 11th September 1947
- Birthplace: Edenbridge, Kent, England
Sir Walter Galpin Alcock MVO was an English organist and composer. He held a number of important posts as an organist, playing at the coronations of three monarchs. He was also professor of organ at the Royal College of Music, London.