Mervynn \m(e)-rvy-nn, mer-vynn\ as a boy's name is a variant of Mervin (Old Welsh), and the meaning of Mervynn is "sea friend".

The baby name Mervynn sounds like Murvynn and Mervyn. Other similar baby names are Merlynn, Kervyn, Merwyn, Marwynn, Marvyn, Melvyn, Malvynn, Merlyn, Merlinn, Murvyn, Merwinn, Merven and Morvyn.