Newbold is both a surname and a masculine given name. Notable people with the name include:
Surname Alf Newbold (1921–2002), English footballer Charles Newbold (1764–1835), American inventor Ethel Newbold (1882–1933), English epidemiologist and statistician Fred Newbold (born 2001), Welsh hockey player Gregory S. Newbold, American Marine Corps general Joshua G. Newbold (1830–1903), American politician from Iowa Marjory Newbold (1883–1926), Scottish socialist and communist politician Soon Hee Newbold (born 1974), Korean-born American composer Tricia Newbold, American government employee and whistleblower Walton Newbold (1888–1943), British politician
Given name Newbold Black (1929–2013), American hockey player Newbold Morris (1902–1966), American politician and lawyer Newbold Noyes Jr. (1918–1997), American publisher, journalist, and newspaper editor
See also Newbolt Newbould Newbold House (disambiguation), historic houses