Martenn \m(a)-rte-nn, mar-tenn\ as a boy's name is a variant of Martin (Latin), and the meaning of Martenn is "dedicated to Mars".
The baby name Martenn sounds like Marten, Marden, Morten, Martyn, Marton, Martino and Martijn. Other similar baby names are Barten, Manten, Martell, Marlonn, Marlinn, Marlen, Marmeon, Marsean, Marsten, Martel, Marwynn, Marven and Varten.