Dag Danielsen (born 8 April 1955, in Ullensaker) is a Norwegian politician. He was a Storting representative between 1997–2001, representing Fremskrittspartiet. In 2001, he was involved in arguments with the party leadership, and left the party with, among others, Vidar Kleppe.[1]
Danielsen has also been involved with local politics in Oslo.
Danielsen is the general secretary of the Norwegian Chess Federation and his brother is lawyer Per Danielsen.