Dennyson \d(e)-nny-son\ as a boy's name is a variant of Dennison (Old English), and the meaning of Dennyson is "son of Dennis".

The baby name Dennyson sounds like Tennyson and Denison. Other similar baby names are Dennys, Annson, Benson, Bensson, Dayson, Denys, Dennis, Dennes, Deonys, Dionysos, Dyson, Jenson and Jensson.