Willem van Ravesteyn (Rotterdam, 15 October 1876 – Rotterdam, 10 June 1970) was a Dutch Communist politician and historian. Ravesteyn studied history at the University of Leiden and was involved in setting up the local branch of the Dutch Social Democratic Workers' Party (SDAP) in 1898.With David Wijnkoop and Jan Ceton he was on the editorial board of the left-wing Marxist newspaper De Tribune when it was set up in October 1907. However, Pieter Jelles Troelstra and , the reformist leaders of the SDAP, found this unacceptable and organised a special congress to discuss throwing out De Tribune from the party. They were able to get a clear majority for this at the congress held on February 14, 1909. The De Tribune group founded the Social Democratic Party (SDP) on March 14, 1909.