Ioannes IV (Greek: Ἰωάννης Δ΄, Iōannēs D΄) may refer to:
- Patriarch John IV of Constantinople (died in 595)
- John IV, Archbishop of Ohrid (c. 1088 – 1163/64)
- John IV Laskaris (1250–c. 1305)
- John IV Megas Komnenos (c. 1403–1459), emperor of Trebizond
See also
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.