Ivan Asen
John or Ivan Asen may refer to:
- Ivan Asen I, ruler of Bulgaria
- Ivan Asen II, ruler of Bulgaria
- Ivan Asen III, ruler of Bulgaria
- John Komnenos Asen, ruler of Valona
- John Doukas Angelos Palaiologos Raoul Laskaris Tornikes Philanthropenos Asen, 14th or 15th-century Byzantine noble child