Baby Names Boy Names Meaning of the Name Athanasios Updated January 12, 2026 by Jennifer M. Athanasios Gender: Male Origin: Greek Meaning: Immortal ♥ Add to my Namelist What is the meaning of the name Athanasios? The name Athanasios is primarily a male name of Greek origin that means Immortal. People who like the name Athanasios also like: Calix, Dante, Ajax, Thanos, Aiden, Atalo, Gregory, Nasia, Leila, Amaya, Saoirse, Arsinoe, Athena, Kendra Names like Athanasios: Athanasius, Athanasia, Adonis, Athenais, Adoncia, Adams, Adonica, Adonijah, Admassu, Atanazy, Atanazja Stats for the Name Athanasios Athanasios is currently not in the top 100 on the Baby Names Popularity Charts Athanasios is currently not ranked in U.S. births