The name 'Aleksander' is a variant of 'Alexander', which originates from the Greek name 'Ἀλέξανδρος' (Alexandros). The name is composed of the elements 'alexein', meaning 'to defend', and 'aner', meaning 'man'. Thus, the name generally signifies 'defender of man' or 'protector of mankind'. It is widely used in various cultures and languages, each with its own slight variations in spelling and pronunciation.