M. J. R. L. "Marcel" de Graaff (Dutch: [ˈmɑrsɛl də ɣraːf]; born 7 April 1962) is a Dutch politician. He has been a Member of the European Parliament (MEP) for the Netherlands since February 2020, and previously served between 2014 and 2019. He represented the Party for Freedom (PVV) and was co-president of the Europe of Nations and Freedom. De Graaff was a member of the Senate of the Netherlands for the PVV from 2011 to 2014.