Anastasius is part of the name of:
- Pope Anastasius I -- Pope from 399-401
- Pope Anastasius II -- Pope from 496-498
- Pope Anastasius III -- Pope from 911-913
- Pope Anastasius IV -- Pope from 1153 to 1154
- Roman Emperor Anastasius I -- (c. 430-518) Roman emperor
- Roman Emperor Anastasius II -- (d. 721) Roman emperor in the East