Caesarius may refer to:

• Caesarius (consul) (fl. 386-403), Eastern-Roman politician
• Caesarius of Africa (died c. 3rd century), a Christian martyr
• Caesarius of Alagno (died 1263), a Roman Catholic priest, bishop and royal counsellor
• Caesarius of Arles (468/470 – 542), ecclesiastic in Gaul
• Caesarius of Heisterbach, 13th-century Christian
• Caesarius of Nazianzus (c. 1180 – c. 1240), physician and politician
• Owain Caesarius, possibly Owain ap Dyfnwal (fl. 934)

See also[edit]

• All pages with titles containing Caesarius