Kozak is a Slavic surname literally meaning Cossack. Notable people with the surname include:
Amanda Kozak (born 1984), American beauty pageant winnerAnna Kozak (born 1974), Belarusian sprinterAndrew Kozak (born 1982), meteorologist and television personalityAshley Kozak, British jazz bassist, record producer and artists' managerDanuta Kozák (born 1987), Hungarian sprint canoerDmitry Kozak (born 1958), Russian politicianDon Kozak (born 1952), Canadian former professional ice hockey forwardEvelyn Kozak (1899-2013), American supercentenarian who died at the age of 113 years, 301 days and was the oldest Jew everFerdo Kozak (1894-1957), Slovenian author, playwright, editor and politicianHarley Jane Kozak (born 1957), American actress and authorHeidi Kozak (born 1963), American actressIvan Kozák (born 1970), Slovak football playerJán Kozák (footballer born 1954), Slovak footballerJán Kozák (footballer born 1980), Slovak footballerJuš Kozak (1892-1964), Slovenian writer, playwright and editorLes Kozak (born 1940), Canadian former ice hockey playerLibor Kozák (born 1989), Czech football playerMykhaylo Kozak (born 1991), Ukrainian football strikerOleksandr Kozak (born 1994), Ukrainian footballerPetr Kozák (born 1965), Czech orienteering competitorPetro Kozak (1911–1984), Ukrainian clandestine Greek-Catholic hierarch, auxiliary bishop of Lviv (1983–1984)Primož Kozak (1929-1981), Slovenian playwright and essayistRachael Kozak, Female electronic musician and Black Metal lyricistRichard Kozak (born 1949), Canadian politician in Manitoba, CanadaRoman Mykolayovych Kozak (born 1957), Ukrainian politician, candidate in the 2004 Ukrainian presidential electionRoman Yefimovich Kozak (1957-2010), Russian theatre actor and directorSemyon Kozak (1902-1953), Soviet generalScott Kozak (born 1965), American football linebackerSyarhey Kozak (born 1981), Belarusian footballerVáclav Kozák (1937-2004), Czech rowerWarren Kozak (born 1951), American writer, journalistZbigniew Kozak (born 1961), Polish politician