Leo de Block (14 August 1904 – 4 January 1988) was a Dutch politician of the defunct Catholic People's Party (KVP) now merged into the Christian Democratic Appeal (CDA) party and businessman. De Block attended the Ignatius Gymnasium in Amsterdam from April 1917 until May 1923 and applied at the Leiden University in June 1923 majoring in Law and obtaining an Bachelor of Laws degree in June 1925 before graduating with a Master of Laws degree in July 1929. De Block worked as a financial analyst for the Amsterdamsche Bank from September 1923 until October 1928 and for the from October 1928 until August 1945 and for the Management Institute from August 1945 until July 1946. De Block worked as Chief executive officer (CEO) of the Incasso Bank from July 1946 until February 1947. De Block worked