Mathiasen is a Danish-Norwegianpatronymic surname meaning "son of Mathias" (equivalent of the Biblical Μαθθαιος, cf. EnglishMatthew). Several spelling variants are used, including Matthiasen and Matthiassen. A similar diversity of forms exist for the parallel given nameMathies/Mathis. Though not a hard and fast rule, generally spellings with a single s are Danish and a double ss are Norwegian.
There are several people with the surname Mathiasen:
This page lists people with the surnameMathiasen. If an internal link intending to refer to a specific person led you to this page, you may wish to change that link by adding the person's given name(s) to the link.