Anastasius (Latinized) or Anastasios (Greek: Αναστάσιος, romanized: Anastasios) is a masculine given name of Greek origin derived from the Greek word ἀνάστασις (anastasis) meaning "resurrection". Its female form is Anastasia (Greek: Αναστασία). A diminutive form of Anastasios is Tassos (Greek: Τάσος).
Other Christian saints and clergy
- Saint Anastasius, martyr under Nero
- Saint Anastasius the Fuller (died 304), martyr and patron saint of fullers and weavers
- Saint Anastasius of Lleida [ca] (c. 263–11 May 305)
- Pope Anastasius of Alexandria, Coptic Orthodox Pope of Alexandria 605–616
- Anastasius of Antioch (disambiguation), multiple people
- Anastasius (Graeco-Roman jurist) (fl. 6th century)
- Saint Anastasius of Persia (died 628), Persian martyr
- Saint Anastasius of Pavia (died 680), bishop of Pavia
- Anastasius of Armenia, successor of Nerses III the Builder as Catholicos of Armenia from 661 to 667
- Saint Anastasius Sinaita (fl. 7th century), theologian, Father of the Eastern Orthodox Church, monk, priest, and abbot of the monastery at Mt. Sinai
- Anastasius (abbot of Euthymius) (fl. 8th century)
- Anastasius Bibliothecarius (c. 810–878), librarian of the Church of Rome, scholar and statesman, sometimes identified as an Antipope
- Astrik or Saint Anastasius of Pannonhalma, ambassador of Stephen I of Hungary
- Anastasius of Suppentonia (died 570), abbot
- Patriarch Anastasius of Constantinople, Patriarch of Constantinople 730–754
- Anastasius, Cardinal-priest of the title of San Clemente, c. 1102–c.1125
- Anastasius Germonius (1551–1627), Archbishop of Tarantaise and canon lawyer
- Anastasius the Melodist (Hymnographer), believed to be a name of three or more melodists, one of whom is believed to have been a contemporary of Rhomanos
- Anastasios (born 1929), Greek Orthodox Archbishop of Tirana, Durrës and All Albania
Politicians and military
- Anastasios Balkos (1916–1995), Greek politician
- Anastasios Charalambis (1862–1949), Greek officer and interim Prime Minister of Greece
- Anastasios Dalipis (1896–1949), Greek Army officer and politician
- Anastasios Karatasos (1764–1830), Greek military commander during the Greek War of Independence
- Anastasios Londos (1791–1856), Greek politician and senator
- Anastasios Nerantzis (1944–2021), Greek politician
- Anastasios Papaligouras (born 1948), Greek politician
- Anastasios Papoulas (1857–1935), Greek general
- Anastasios Peponis (1924–2011), Greek politician
- Anastasios Polyzoidis (1802–1873), Greek politician and judicial official
- Anastasios Tsamados (1774–1825), Greek admiral of the Greek War of Independence