Athanasios is a name of Greek origin, commonly associated with the meaning "immortal." It has been borne by several notable figures throughout history, including saints and scholars. One of the most famous is Saint Athanasius, a 4th-century Christian theologian who played a crucial role in the development of early Christian doctrine. In modern times, Athanasios is still a popular name in Greece and among Greek communities worldwide. It is often shortened to Thanasis or Athos in informal settings. The name reflects a rich cultural heritage and is frequently used in various forms of art and literature.