John X of Constantinople | |
|---|---|
| Ecumenical Patriarch of Constantinople | |
| Church | Church of Constantinople |
| In office | 5 August 1198 – April/May 1206 |
| Predecessor | George II of Constantinople |
| Successor | Michael IV of Constantinople |
| Personal details | |
| Born | ? |
| Died | April or May 1206 |
John X Kamateros (Greek: Ἰωάννης Καματηρός; died April or May 1206) was the Patriarch of Constantinople from 5 August 1198 to April/May 1206.