In order to write about the significance of the name of Zalmoxis in the Dacian language and religion, I begin with the displaying of the sources. Afterwards, there are presented three debates, about: (1) the relation between Zalmoxis and Pythagoras, showing that the philosopher was definitely influenced by the Thraco-Dacian beliefs which were also present in Zamolxianism; (2) “immortalization” as an initiatic mystery cult, shamanic practices; (3) an exploration of the forms Zalmoxis and Zamolxis.