Gradon \g-ra-don\ as a boy's name is a variant of Grady (Irish, Gaelic), and the meaning of Gradon is "renowned".
The baby name Gradon sounds like Graden and Graydon. Other similar baby names are Bradon, Ardon, Braden, Braydon, Braedon, Bradin, Braddon, Bradan, Garon, Gordon, Gradey, Gradee, Gradea, Grayton, Grayson, Greydon and Kadon.