Landyn \l(a)-nd-yn, lan-dyn\ as a boy's name is a variant of Landon (Old English), and the meaning of Landyn is "long hill".
The baby name Landyn sounds like Landin, Landen and Landan. Other similar baby names are Lander, Landry, Landor, Landis, Land, Lando, Langdon, Langden, Lindy, Linden, Lyndon, Lynden, Lindon, London, Lundy, Mandan and Randon.