Serbian Orthodox Eparchy of Slavonia is an eparchy (diocese) of the Serbian Orthodox Church encompassing areas of western and central Slavonia, Croatia. Since 2014, the Eparchy is headed by bishop Jovan Ćulibrk.

The Serbian Patriarchate of Peć or just Patriarchate of Peć, was an autocephalous Eastern Orthodox Patriarchate that existed from 1346 to 1463, and then again from 1557 to 1766 with its seat in the Patriarchal Monastery of Peć. It had ecclesiastical jurisdiction over Eastern Orthodox Christians in Serbian Lands and other western regions of Southeastern Europe. Primates of the Patriarchate were styled Archbishop of Peć and Serbian Patriarch.