Greenwell is an English surname. Notable people with the surname include:
Arts and entertainment Dora Greenwell (1821–1882), English poet Emma Greenwell (born 1989), American actress Garth Greenwell (born 1978), American poet, author, literary critic, and educator Mary Greenwell (active 2025), British make-up artist Peter Greenwell (1929–2006), English composer and pianist
Sport Don Greenwell (1924–2002), English footballer, played one game for York City Jack Greenwell (1884–1942), English footballer and manager, notably for Barcelona Mike Greenwell (1963–2025), American baseball player Rebecca Greenwell (born 1995), American basketball player Ross Greenwell (born 1998), English cricketer
Other Andrew Greenwell (born 1983), American real estate broker and reality TV personality Ashlee Greenwell (born 1988), American beauty queen Carlyle Greenwell (1884–1961), Australian architect George Clementson Greenwell (1821–1900), British mining engineer Harry Edward Greenwell (1944–2013), American serial killer Henry Nicholas Greenwell (1826–1891), English merchant who sold Kona coffee, founder of the Greenwell Store Joe Greenwell (born 1951), British business executive Leonard Greenwell (1781–1844), British Major-general Richard Greenwell (1942–2005), British cryptozoologist and explorer Thomas George Greenwell (1894–1967), British Member of Parliament Tom Greenwell (1956–2013), judge in the U.S. state of Texas William Greenwell (1820–1918), English archaeologist and Church of England priest
See also Amy B. H. Greenwell Ethnobotanical Garden, Hawaii, U.S. Greenwell baronets, a title in the Baronetage of the United Kingdom, created in 1906 Greenwell, a hamlet in Cumberland, Cumbria, England Greenwell Glacier, Antarctica Greenwell Matongo (suburb), a suburb in the city of Windhoek, Namibia Greenwell Point, New South Wales, an inhabited place in Australia Greenwell Springs, Louisiana, an unincorporated community in the U.S. state of Louisiana Greenwell State Park, in the U.S. state of Maryland Greenwell Store, a historic building in the U.S. state of Hawaii Kent Budden & Greenwell, an Australian architectural practice in Sydney, New South Wales 1913–1919