Paulus Orosius (; born 375, died after 418 AD) — less often Paul Orosius in English — was a Gallaecian Christian priest, historian and theologian, a student of Augustine of Hippo. It is possible that he was born in Bracara Augusta (now Braga), then capital of the Roman province of Gallaecia. Although there are some questions regarding his biography, such as his exact date of birth, it is known that he was a person of some prestige from a cultural point of view, as he had contact with the greatest figures of his time such as Saint Augustine of Hippo and Saint Jerome. In order to meet with them Orosius travelled to cities on the southern coast of the Mediterranean Sea, such as Hippo Regius and Alexandria.