Showell is a surname. Notable people with the name include:
David Showell (1924–1955), American fighter pilot during World War II in an all-black Tuskegee Airmen squadron Eliza Showell (1895–1978), English-born child migrant sent to Canada in the British Home Children programme Frank Showell Styles (1908–2005) English writer and mountaineer George Showell (1934–2012), English footballer Jack Showell (1915–1989), Australian rules footballer
See also Showell, Maryland, unincorporated community in Worcester County, Maryland, United States