Bosak is a Polish surname. Notable people with the surname include:
Aleksander Bosak (born 1993), Polish racing driver Bogusław Bosak (born 1968), Polish politician John Bosak (1922–1994), American basketball player Jon Bosak (1924–2011), American engineer Krzysztof Bosak (born 1982), Polish politician Marcin Bosak (born 1979), Polish actor Meir Bosak (1912–1992), Polish-Israeli writer Tanja Bosak, Croatian-American experimental geobiologist
See also Hauke-Bosak, a German-Polish family Józef Hauke-Bosak (1834–1871), Polish general Allan Boesak (born 1946), South African Dutch Reformed Church cleric Leonard Bosack (born 1952), co-founder of Cisco Systems Rudy Bozak (born 1982), American acoustics engineer Tyler Bozak (born 1986), Canadian ice hockey player