Baby Names Boy Names Meaning of the Name Alexius Updated January 12, 2026 by Jennifer M. Alexius Gender: Male Origin: Latin Meaning: To Defend ♥ Add to my Namelist What is the meaning of the name Alexius? The name Alexius is primarily a male name of Latin origin that means To Defend. People who like the name Alexius also like: Ethan, Leander, Arthur, Axel, Duncan, Cyrus, Elijah, Sierra, Naomi, Ashtyn, Ayla, Savanna, Tessa, Raja Names like Alexius: Alysha, Alucia, Alayka, Alka, Alaqua, Alexei, Aliyas, Alejo, Aloysius, Aliza, Alekos, Alice, Alissa, Alessa, Alexi, Alexey, Alyshea, Alicja, Ailish, Alicia, Alex, Alessio, Aleka, Alezae, Alexia, Ailis, Ailsa, Alayja, Alaska, Alizee Stats for the Name Alexius Alexius is currently not in the top 100 on the Baby Names Popularity Charts Alexius is currently not ranked in U.S. births