Kelwyn \k(e)-lw-yn\ as a boy's name is a variant of Kelvin (English), and the meaning of Kelwyn is "friend of ships".

The baby name Kelwyn sounds like Kelwin, Colwyn, Kellen, Kelan, Kellin, Kellan and Kelwinn. Other similar baby names are Delwyn, Kelvyn, Kerwyn, Melwyn, Selwyn and Welwyn.