'Anastasios' originates from Greek, specifically the word 'ἀναστάσις' (anastásis), where 'ἀνά-' (ana-) meant 'up, again' and the stem related to 'stand/raise' gave the sense 'resurrection'.

'Anastasios' was used in Byzantine Greek and was Latinized as 'Anastasius' in Late Latin/Medieval Latin; through Christian usage (saints and bishops) it entered other European languages and modern English as the proper name 'Anastasios'.

Initially it meant 'of or pertaining to resurrection' (literally 'of the rising'), and over time it became used primarily as a male personal name with that original sense as its semantic origin.