John Alcock
John Alcock may refer to:
- John Alcock (bishop), English churchman
- John Alcock (priest), Dean of Ferns, 1747–1769
- John Alcock (organist), English organist and composer
- John Alcock (Archdeacon of Raphoe), Irish Anglican priest
- John Alcock (organist, born 1740), English organist and composer. Son of John Alcock
- John Forster Alcock, English sportsman and football organiser
- John Alcock (Archdeacon of Waterford)
- John Alcock (RAF officer), British Royal Air Force officer. First non-stop transatlantic flight
- John Alcock (behavioral ecologist), American author, professor at Arizona State University