'''Bassianus''' may refer to:
* Caracalla (Lucius Septimius Bassianus, 188–217), Roman Emperor * Julius Bassianus (died 217), Emesene High Priest * Marcus Julius Gessius Bassianus ({{floruit|212–217}}), Roman priest during the reign of Caracalla * Elagabalus ({{circa|203–222}}), Roman Emperor * Bassianus (senator) (died 316), senator executed by Constantine the Great * Saint Bassianus of Lodi ({{circa|320}} – {{circa|409}}), bishop of Lodi, Italy * Bassianus (bishop) ({{floruit|444–451}}), bishop of Ephesus * Joannes Bassianus (12th century), Italian jurist
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