Ioannes (given name)Ioannes is a given name. Notable people with the name include: Ioannes, a Roman usurper Ioannes Kegen, a Pecheneg military commander Ioannes I (disambiguation) Ioannes II (disambiguation) Ioannes III (disambiguation) Ioannes IV (disambiguation) Ioannes V (disambiguation) Ioannes VI (disambiguation) Ioannes VII (disambiguation) Ioannes VIII (disambiguation)