Gwynn \gw(y)-nn\ as a boy's name (also used as girl's name Gwynn), is a variant of Gwyn (Welsh), and the meaning of Gwynn is "fair, white blessed, holy".

The baby name Gwynn sounds like Gwinn, Gayne, Gwayne, Gwayn, Gunn, Gwin, Guinn and Gyan. Other similar baby names are Ewynn, Glynn and Owynn.