Tamsen \t(a)-msen, tam-sen\ as a boy's name (also used as girl's name Tamsen), is a variant of Tamson (Old English), and the meaning of Tamsen is "son of Thomas".

The baby name Tamsen sounds like Thomson and Thomason. Other similar baby names are Tansen, Damyen, Damien, Damen, Samson, Tanson, Tayson, Tyssen and Tiesen.