John Alleyne or John Alleyn may refer to:
Sir John Alleyne, 1st Baronet (1724–1801), Speaker of the House of Assembly of Barbados Sir John Alleyne, 3rd Baronet (1820–1912), British businessman and engineer John Alleyne (cricketer) (1908–1980), Australian cricketer John Alleyne (dancer) (born 1960), Canadian ballet dancer and choreographer John Alleyne (priest) (fl. 1466–1506), Dean of St Patrick's Cathedral, Dublin John Alleyn (barrister) (1621–1663), English barrister and MP John Alleyn (mercer) (died 1544), Lord Mayor of London John Alleyn (surgeon) (died 1686) English surgeon and schoolmaster John Alan, Alen, or Alleyn (c. 1500–1561) English government official in Ireland
See also John Aleyn (disambiguation)