Amstutz is a surname. Notable people with the surname include:
Adrian Amstutz (born 1953), Swiss politician J. Bruce Amstutz (1928–2021), American diplomat Dan Amstutz (1932–2006), American lobbyist Hobart Baumann Amstutz (1896–1980), American Methodist bishop Joe Amstutz (1934–2021), American football player Kayleigh Rose Amstutz (born 1998), better known as Chappell Roan, American singer-songwriter Reto Amstutz (born 1993), Swiss ice hockey player Ron Amstutz (born 1952), American politician Tom Amstutz (born 1955), American football coach