Gaston François Marie, Viscount Eyskens (1 April 1905 – 3 January 1988) was a Christian democratic politician and Prime Minister of Belgium. He was also an economist and member of the Belgian Christian Social Party (CVP-PSC).He served six terms as Prime Minister of Belgium, holding the position from 1949 to 1950, 1958 to 1961 and 1968 to 1973.