Justinian (lat .: Iustinianus ) is the name of the following people:
- Justinian I (527-565), Eastern Roman emperor
- Justinian II (685–695 and 705–711), Byzantine emperor
- Justinian (Hermit) (Jestin) (6th century)
- Justinian (general) , Eastern Roman general in the 6th century and a relative of Justinian I.
- Justinian Marina , Romanian Patriarch
- Justinianus Rauricorum , Bishop of Kaiseraugst in the 4th century