John Crozier may refer to: John Crozier (archbishop of Armagh) (1858–1920), Anglican bishop in Ireland, father of the below John Crozier (bishop of Tuam, Killala and Achonry) (1879–1966), Anglican bishop in Ireland, son of the above John Crozier (politician) (1814–1887) Australian pastoralist and member of South Australian Legislative Council John Hervey Crozier (1812–1889), American politician