Flavius Antiochianus (flourished 3rd century) was a prominent Roman politician during the reigns of the emperors Gallienus, Claudius Gothicus, Quintillus and Aurelian, in the period referred to as the Crisis of the Third Century in the Roman Empire.
The identity of his mother is unknown; however, his father was the Flavius Antiochianus who served as a prefect of a cohort in Germania Superior in 211, and subsequently in Mauretania Caesariensis, returning to Rome to serve as a praetorian prefect in 221 under the emperor Elagabalus.
The younger Antiochianus married a prominent and wealthy noblewoman, Pomponia Ummidia, sister of the Senator Pomponius Bassus.
Sometime in 268–270, in the reign of Claudius Gothicus, Antiochianus served as a suffect consul[1] and as a praefectus urbi.
There is a possibility that during his second consulship, Antiochianus may have been responsible for the construction of the Balineum Antiochiani, one of the ancient baths (thermae) in Rome.