Tonio \t(o)-nio\ as a boy's name is a variant of Tony (English). See for meaning of Tonio.

The baby name Tonio sounds like Toni and Tonie. Other similar baby names are Torio, Toney, Ton, Boni, Honi, Dionio, Genio, Junio, Toro, Tavio, Tadio, Tomie, Tino, Tyno, Tobin, Tobie, Tobia, Tobi, Togo, Tomeo, Torin, Torion, Torrio and Tynin.