Walwynn \wa-lwy-nn\ as a boy's name is a variant of Walwyn (Old English), and the meaning of Walwynn is "Welsh friend".

The baby name Walwynn sounds like Walwynne and Walwinn. Other similar baby names are Elwynn, Alwynn, Colwynn, Delwynn, Dalwyn, Melwynn, Selwynn, Waldenn, Welwyn and Walwin.