Franczak is a Polish surname. Notable people include:

Fran Franczak (born 2007), Polish footballer Józef Franczak (1918–1963), Polish Army and resistance soldier Liz Franczak, co-host of the TrueAnon podcast Paweł Franczak (born 1991), Polish cyclist Stefan Franczak (1917–2009), Polish horticulturist