Johannes Marijnus Antonius Maria (Jan) de Wit (born May 10, 1945 in Zevenbergen) is a former Dutch politician and lawyer. As a member of the Socialist Party (Socialistische Partij) he was an MP from May 19, 1998 till April 1, 2014. He focused on matters of judiciary and aliens policy. From 1995 to 1998 he was a Senator.