Isaäc Arend "Iek" Diepenhorst (18 July 1916 – 21 August 2004) was a Dutch politician of the defunct Anti-Revolutionary Party (ARP) and later the Christian Democratic Appeal (CDA) party and jurist. Diepenhorst applied at the Free University Amsterdam in June 1934 majoring in Law and Theology and obtaining Bachelor of Laws and Bachelor of Theology degrees in July 1936 and worked as a student researcher before graduating with a Master of Laws degree in September 1937 and an Master of Theology degree in March 1940 and later got a doctorate as an Doctor of Law on 10 June 1943. Diepenhorst worked as a professor of Criminal law and Criminal procedure at the Free University Amsterdam serving from October 1945 until April 1965. Diepenhorst also worked as a radio presenter and political pundit for t