Merryn \m(e)-rr-yn\ as a girl's name is a variant of Merry (Old English), and the meaning of Merryn is "joyful, lighthearted".

The baby name Merryn sounds like Marrin, Maryn, Merrona and Morwyn. Other similar baby names are Ferryn, Kerryn, Merryl, Merlyn, Perryn and Terryn.