Ioannes I (Greek: Ἰωάννης A΄, "John I") may refer to:
- Patriarch John I of Constantinople (c. 347–407)
- John I Tzimiskes (c. 925–976), Byzantine Emperor
- John I Doukas of Thessaly (c. 1240–1289)
See also edit
This disambiguation page lists articles about people with the same name.
If an internal link led you here, you may wish to change the link to point directly to the intended article.
If an internal link led you here, you may wish to change the link to point directly to the intended article.