Hilarianus
Hilarianus or Hilarian may refer to:
People
- Publius Aelius Hilarianus, Roman politician, probably the governor in the Passion of Saints Perpetua and Felicity
- , Roman military commander
- Mecilius Hilarianus, prefect of Rome and praetorian prefect of Italy
- , prefect of Rome and praetorian prefect of Italy
- Decimius Hilarianus Hesperius, Roman politician
- Caelius Hilarianus, Roman senator and priest
- Hilarianus (magister officiorum)
- Quintus Julius Hilarianus, Roman historian and millenarian writer
- , Catholic priest purportedly martyred by the Saracens