Václav Blažek (born 23 April 1959) is a Czech historical linguist. He is a professor at Masaryk University in Brno and also teaches at the University of West Bohemia in Plzeň.
His major interests include Indo-European languages, Uralic languages, Altaic languages, Afroasiatic (Hamito-Semitic) languages, Nostratic languages, Dené–Caucasian languages, and mathematical linguistics (lexicostatistics and glottochronology).