Jansson \j(a)-nsson, jan(s)-son\ as a boy's name is a variant of Janson (Scandinavian), and the meaning of Jansson is "son of Jan".
The baby name Jansson sounds like Janssen and Jensson. Other similar baby names are Hansson, Hanson, Ansson, Bensson, Hanssen, Jackson, Jakson, Jacson, Jamison, Jameson, Jenson, Jansen, Jason, Jayson, Jaison, Jonson, Sanson and Tanson.