Orosius (disambiguation)
Orosius (Paulus Orosius, b. circa 375, d. 418?) was a Christian historian, theologian and student of Augustine of Hippo from Gallaecia. Orosius  may also refer to:
 Orosius (leafhopper), a bug genus in the family Cicadellidae

See also
 Bobbio Orosius, an early 7th-century manuscript of the Chronicon by Paulus Orosius
 List of Roman cognomina