Aleksi \a-lek-si, al(e)-ksi\ as a boy's name is a variant of Alexis (Greek), and the meaning of Aleksi is "defender, protector".
The baby name Aleksi sounds like Aleks, Aleksio, Aleksei and Oleksi. Other similar baby names are Aleko, Alek, Alexi, Alexei, Aleksius, Aleksios, Oleksiy and Oleksei.