Mar Shimun
Mar Shimun may refer to any of the following Patriarchs of the Church of the East:
- Shemon Bar Sabbae,, Church of the East
- Shimun II, Church of the East
- Shimun III, Church of the East
- Shimun IV, Church of the East
- Shimun V, Church of the East
- Shimun VI, Church of the East
- Shemon VII Ishoyahb, Church of the East
- Shimun VIII Yohannan Sulaqa, first Patriarch of the Chaldean Catholic Church
- Shimun IX Dinkha, Patriarch of the Chaldean Catholic Church
- Shimun X Eliyah
- Shimun XI Eshuyow
- Shimun XII Yoalaha
- Shimun XIII Dinkha 1681–1700, Patriarch who broke the Communion with Rome. Successors became leaders of the Assyrian Church of the East
- Shimun XIV Shlemon, Assyrian Church of the East
- Shimun XV Maqdassi Mikhail, Assyrian Church of the East
- Shimun XVI Yohannan, Assyrian Church of the East
- Shimun XVII Abraham, Assyrian Church of the East
- Shimun XVIII Rubil, Assyrian Church of the East
- Shimun XIX Benyamin, Assyrian Church of the East
- Shimun XX Paulos, Assyrian Church of the East
- Shimun XXI Eshai , Assyrian Church of the East