Baby Names Boy Names Meaning of the Name Alexius Updated January 22, 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: Cyrus, Duncan, Ethan, Elijah, Arthur, Axel, Leander, Tessa, Sierra, Raja, Ashtyn, Savanna, Ayla, Naomi Names like Alexius: Ailish, Alexei, Aloysius, Alekos, Alyshea, Alaqua, Alezae, Alexi, Alake, Alessia, Alisa, Alicja, Alois, Alex, Alize, Alisha, Aelius, Aliza, Alysha, Alkas, Alyssa, Alucia, Aliyus, Ailsa, Aliaksei, Alyce, Alke, Alessi, Aloisia, Alayja 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