Marius Nygaard Haug (born 1960) is a Norwegian jurist.
Among others he has had a leading position in the Norges Bank Investment Management.
He is a son of Bjørn Haug and Agnes Nygaard Haug, and a grandson of Supreme Court Justice Marius Nygaard.
[3] He was working for the Norwegian Ministry of Finance when he in late 1992 was hired in the European Free Trade Association Surveillance Authority.
[5] Haug later headed the compliance department of Norges Bank Investment Management, with Slyngstad being director from 2008.