Canisius may refer to:

People Saint Peter Canisius (1521–1597), Dutch Jesuit Catholic priest Theodorich Canisius (1532–1606), Jesuit academic, half-brother of St. Peter Canisius Henricus Canisius (1562–1610), Dutch canonist and historian, nephew of St. Peter Canisius Aegidius of Viterbo (Ægidius Canisius), Italian humanist and cardinal Canisius Thekkekara (1914–1998), Syrian Catholic priest

Schools Canisius College, a Jesuit college in Buffalo, New York Canisius Golden Griffins, the sports teams of Canisius College Canisius High School, a Jesuit private high school in Buffalo, New York Jakarta Canisius College, a Jesuit junior and senior high school in Jakarta, Indonesia

See also