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