| Church: | Church of Constantinople |
| Archbishop Of: | Ecumenical Patriarch of Constantinople |
| Term: | May 1134 – January 1143 |
| Predecessor: | John IX of Constantinople |
| Successor: | Michael II of Constantinople |
| Death Date: | January 12, 1143 |
Leo Styppes (Greek, Modern (1453-);: {{lang|grc|Λέων Στυππῆς; died January 12, 1143) was Patriarch of Constantinople from 1134 until his death in 1143. He was a presbyter at Hagia Sophia before his ascension. He reigned uneventfully during the rule of Byzantine emperor John II Comnenus.[1]