Joseph I
# Joseph I

Joseph I or Josef I may refer to:

* Joseph I of Constantinople, Ecumenical Patriarch in 1266–1275 and 1282–1283
* Joseph I, Holy Roman Emperor (1678–1711)
* Joseph I (Chaldean Patriarch) (reigned 1681–1696)
* Joseph I of Portugal (1750–1777)
* Joseph Bonaparte, brother of Napoleon Bonaparte, who reigned in Naples (1806–1808) and Spain (1808–1813) as Joseph I
* Joseph I of Bulgaria (1877–1915)
