Hardcastle is a surname. Notable people and characters with the surname include:The Hardcastle family, principal characters in Oliver Goldsmith's play She Stoops to Conquer Alex Hardcastle, British television director and producer Bill Hardcastle (1874–1944), New Zealand-Australian rugby player Daniel Hardcastle, British YouTuber Diana Hardcastle, British actress Douglas Hardcastle (1886–1915), English footballer Edgar Hardcastle (1900–1995), British theorist of Marxist economics Edward Hardcastle (1826–1905), British businessman and Conservative politician Ernest Hardcastle (1898–1973), English military aviator Frances Hardcastle (1866–1941), English mathematician Frank Hardcastle (1844–1908), British industrialist and Conservative politician Joseph Hardcastle (disambiguation), several people Leslie Hardcastle (1926–2023), British arts administrator, later controller of the British Film Institute May Hardcastle (1913–2002), Australian tennis player Michael Hardcastle (1933–2019), British author of children's sports fiction Paul Hardcastle, British composer and radio presenter Rick Hardcastle, Texas politician Sally Hardcastle (1945–2014), British journalist and radio presenter Sarah Hardcastle, English swimmer Sexton Hardcastle, ring name of pro wrestler Adam Copeland Sonya Hardcastle, New Zealand netballer William Hardcastle (broadcaster) (1918–1975), British journalist and radio news presenter