Sidwell is a surname. Notable people with the surname include:
Aaron Sidwell (born 1988), English actor, singer, musician and producer Ezra Sidwell (1885–1949), English rugby league footballer Henry Sidwell (1857–1936), Anglican bishop Ken Sidwell (1936–2022), American college head basketball and baseball head coach Martindale Sidwell (1916–1998), English organist, composer and teacher Paul Sidwell, Australian linguist Steve Sidwell (born 1982), English footballer Steve Sidwell (American football) (1944–2023), American football coach Steve Sidwell (musician), British arranger, composer, and trumpeter Tom Sidwell (1888–1958), English cricketer