Matlak is a surname. Notable people with the surname include:
Józef Matlak (fl. 1960s), Polish luge competitor Marek Matlak (born 1966), Polish chess player Mark Matlak (born 1956), American coach of American football and baseball Štefan Matlák (1934–2003), Slovak footballer Theodore Matlak (born 1965), American politician