John X (disambiguation)
# John X (disambiguation)

John X may refer to:

* Pope John X (r. 914–928)
* John X (archbishop of Ravenna) (r. 983–998)
* John X bar Shushan (r. 1063/1064–1072/1073)
* Pope John X of Alexandria (r. 1363–1369)
* John X of Antioch (Greek Orthodox, r. 2013–present)
