Alonso \a-lon-so, al(o)-nso\ as a boy's name is a variant of Alfonso (Italian, Spanish), Alonzo (Spanish, Italian) and Alphonse (Old German), and the meaning of Alonso is "ready for battle".

The baby name Alonso sounds like Alohnso, Allonso and Alanso. Other similar baby names are Alon, Alanson, Alano, Alphonso, Alfonzo, Alfonse, Alfons, Affonso, Alohnzo, Allohnso, Allonzo, Alanzo, Aloys, Alois, Aloess and Anso.