Bassianus may refer to:
Caracalla (Lucius Septimius Bassianus, 188–217), Roman Emperor Julius Bassianus (died 217), Emesene High Priest Marcus Julius Gessius Bassianus (), Roman priest during the reign of Caracalla Elagabalus (), Roman Emperor Bassianus (executed by Constantine) (died 316), senator executed by Constantine the Great Saint Bassianus of Lodi ( – ), bishop of Lodi, Italy Bassianus (bishop) (), bishop of Ephesus Joannes Bassianus (12th century), Italian jurist Bassianus, son of the late Emperor of Rome, a character in William Shakespeare's play Titus Andronicus