Alexandar is a ♂ male name.
Aleksandar is a Slavic form of the name Alexander, which derived from the ancient Greek name Aléxandros / Αλεξανδρος.
Aleksandar means “defending men” (from ancient Greek “aléxein/ἀλέξειν” = to defend/help + “anēr/ἀνήρ” = man).