Alldo \a-ll-do\ as a boy's name is a variant of Aldo (Italian, Old German) and Aldous (Old German), and the meaning of Alldo is "old one, elder".

The baby name Alldo sounds like Aled, Alto, Elado and Waldo. Other similar baby names are Ado, Allyn, Allon, Allin, Allie, Alley, Allen, Allan, Alano, Allcot, Aldon, Alejo, Aleko, Aleco, Alfio, Alfeo, Alfo, Allton, Amado, Alcado, Clodo, Aroldo, Araldo and Naldo.