Fetzer is a surname. Notable people with the surname include:
Bill Fetzer (1884–1959), American football, basketball, and baseball coach Bob Fetzer (1887–1968), American football coach and track and field coach Brigitte Fetzer (born 1956), German volleyball player Christine Fetzer, American bodybuilder and model Emil B. Fetzer (1916–2009), American architect Herman Fetzer (1899–1935), American writer, poet and columnist James H. Fetzer (born 1940), American conspiracy theorist and writer John Fetzer (1901–1991), American businessman and Major League Baseball executive John Fetzer (1840–1900), American politician Tom Fetzer (born 1955), American politician