Gustáv Husák (UK: , US: , Slovak: ['gusta??? '?usa?k]; 10 January 1913 – 18 November 1991) was a Slovak communist politician, who served as the long-term First Secretary of the Communist Party of Czechoslovakia from 1969 to 1987 and the president of Czechoslovakia from 1975 to 1989.
His rule is known as the period of the so-called "Normalization" after the Prague Spring.