Marcel de Graaff (born 7 April 1962) is a Dutch politician, he was a member of the Senate for the Party for Freedom from 7 June 2011 until 1 July 2014 and was the party leader in the Senate since 25 September 2012. In the Senate he was succeeded by Alexander Kops. Since 1 July 2014 he has been member of the European Parliament.De Graaff studied theology at the Radboud University Nijmegen between 1981 and 1988.