Marius Aam (born 14 November 1980) is a retired Norwegian football defender who notably played in Tippeligaen for Aalesund.
He started his career in Aalesund, and played first-tier fotball for them in Tippeligaen 2003 and 2005.
He was not a first-team regular, and quit the team in early 2006.
The next season, he fielded for Ålesund's second best club at the time, Skarbøvik IF.
Leaving Skarbøvik ahead of the 2009 season, he later featured for sixth-tier club Hessa.