Eusebius is the name of several significant historical people:
- Pope Eusebius - Pope in AD 309 - 310.
- Eusebius of Alexandria - 6th century author of the Eastern Christian Church
- Eusebius of Angers - 11th century bishop
- Eusebius of Caesarea - "The" Eusebius: the famous historian of the Christian Church who lived in the 4th century.
- Eusebius of Nicomedia - 4th century bishop of Nicomedia
- St Eusebius of Vercelli - 4th century bishop of Vercelle, the present Vercelli