| John Archibald Wheeler | John Archibald Wheeler |
| John Argyropulus | Giovanni Argiropulo |
| John Arne Riise | John Arne Riise |
| John Ashbery | John Ashbery |
| John Backus | John Backus |
| John Bagot Glubb | Glubb Pasha |
| John Balance | John Balance |
| John Bardeen | John Bardeen |
| John Barleycorn | Birra |
| John Barrymore | John Barrymore |
| John Beazley | John Beazley |
| John Belushi | John Belushi |
| John Berchmans | San Giovanni Berchmans |
| John Billingsley | John Billingsley |
| John Bodkin Adams | John Bodkin Adams |
| John Bonham | John Bonham |
| John Bosco | Giovanni Bosco |
| John Boyd Dunlop | John Boyd Dunlop |
| John Brown | John Brown |
| John Brunner | John Brunner |
| John Buchan | John Buchan |
| John Bull | John Bull |
| John Byrne | John Byrne |
| John Cabot | Giovanni Caboto |
| John Cage | John Cage |
| John Cale | John Cale |
| John Calvin | Giovanni Calvino |
| John Camaterus | Papa Giovanni X |
| John Cantius | San Giovanni da Kety |
| John Capodistria | Giovanni Capodistria |
| John Carberry | John Joseph Carberry |
| John Cardinal Cody | John Patrick Cody |
| John Cardinal Farley | John Murphy Farley |
| John Cardinal Wu | John Baptist Wu Cheng-chung |
| John Carew Eccles | John Carew Eccles |
| John Carpenter | John Carpenter |
| John Carter | John Carter di Marte |
| John Casper | John Casper |
| John Cassavetes | John Cassavetes |
| John Cassian | Giovanni Cassiano |
| John Cazale | John Cazale |
| John Cena | John Cena |
| John Chadwick | John Chadwick |
| John Charles | John William Charles |
| John Chivington | John Chivington |
| John Chrysostom | Giovanni Crisostomo |
| John Clare | John Clare |
| John Claudius Loudon | John Claudius Loudon |
| John Cleese | John Cleese |
| John Cleland | John Cleland |
| John Climacus | San Giovanni Climaco |
| John Cockcroft | John Douglas Cockcroft |
| John Cody | John Patrick Cody |
| John Coltrane | John Coltrane |
| John Connally | John Connally |
| John Connolly | John Connolly |
| John Connor | John Connor |
| John Constable | John Constable |
| John Coolidge Adams | John Adams |
| John Couch Adams | John Couch Adams |
| John Cusack | John Cusack |
| John Dalton | John Dalton |
| John de Brito | San Giovanni de Britto |
| John Deacon | John Deacon |
| John Dee | John Dee |
| John DeLorean | John De Lorean |
| John Densmore | John Densmore |
| John Denver | John Denver |
