Nikolaj Villumsen (born 28 February 1983) is a Danish politician who was elected as a Member of the European Parliament in 2019.
In the EP he is in the group European United Left–Nordic Green Left.
He was chosen to be part of a temporary leadership of the Left on 27 June 2019.He was a member of the Folketing from September 2011 to June 2019, representing Enhedslisten.