Hartwell is a surname. Notable people with the surname include:
Abraham Hartwell (1553–1606), English translator and antiquarian
Alfred S. Hartwell (1836–1912), American Civil War officer and Hawaii judge
Ambrose Hartwell (1883–??), English footballer
Michael Berry, Baron Hartwell (1911–2001), newspaper proprietor
Calvin Hartwell (died 1920), Mayor of Pasadena, California (1896–98) Charles Hartwell (1825–1905), American missionary Charles Leonard Hartwell (1873–1951), British sculptor David G. Hartwell (1941–2016), American science fiction and fantasy editor Edgerton Hartwell (born 1978), former American footballer Erin Hartwell, American cyclist J. Hartwell Harrison (1909–1984, American urologic surgeon and educator Josh Hartwell (1869–1940), 19th-century American college football coach Leland H. Hartwell (born 1939), President and director of the Fred Hutchinson Cancer Research Center, Seattle; 2001 Nobel Prize laureate Lori Hartwell, Founder and president of the Renal Support Network Martin Hartwell, Canadian bush pilot Mary Hartwell (1747–1846), figure of the battles of Lexington and Concord Mary Hartwell (1847–1902), American author better known as Mary Hartwell Catherwood Ronald Max Hartwell (1921-2009, Australian-born economic historian William Hartwell (1880–??), English footballer
Fictional characters: Harley Hartwell, character from the manga series Case Closed Walter Hartwell White (Breaking Bad)