Şihabetdin Märcani (pronounced [ʃihæbetˈdin mærʑæˈni]; Cyrillic Tatar: Шиһабетдин Мәрҗани, Arabic Tatar: شہاب الدین مرجانی, also spelled Shihab al-Din al-Marjani;[1] 1818–1889) was a Tatar Muslim theologian and historian.