Ioannes IV
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