John - Juan
- John the Silent
- John the Silent, Saint
- John Thomas Troy
- John Trithemius
- John Twenge, Saint
- John V
- John V, Pope
- John Vertin
- John VI
- John VI, Pope
- John VII
- John VII, Pope
- John VIII
- John VIII, Pope
- John Wessel Goesport (Gansfort)
- John Wyclif
- John X
- John X, Pope
- John XI
- John XI, Pope
- John XII
- John XII, Pope
- John XIII
- John XIII, Pope
- John XIV
- John XIV, Pope
- John XIX (XX)
- John XIX (XX), Pope
- John XV (XVI)
- John XV (XVI), Pope
- John XVI (XVII)
- JOHN XVI (XVII), Antipope
- John XVII (XVIII)
- John XVII (XVIII), Pope
- John XVIII (XIX)
- John XVIII (XIX), Pope
- John XXI (XX)
- John XXI (XX), Pope
- John XXII
- John XXII, Pope