Douthwaite is a surname. Notable people with the surname include:

Arthur Henry Douthwaite (1896–1974), British physician and writer Christopher Thomas Douthwaite (1875–1949), British politician Harold Douthwaite (1900–1972), English cricketer Pat Douthwaite (1934–2002), Scottish artist Richard Douthwaite (1942–2011), British economist, ecologist, campaigner and writer