Harold Smith

Harold Smith may refer to:

• Harold Smith (diver) (1909–1958), American diver and Olympic gold medalist
• Harold Smith (football) (1916–2006), director of Ipswich Town Football Club
• Harold Hill Smith (1910–1994), American geneticist, fused a human cell and a plant cell
• Harold Jacob Smith (1912–1970), American Academy Award winning screenwriter
• Harold Smith (detective) (1926–2005), art detective
• Harold Smith (politician) (1876–1924), British Member of Parliament for Warrington, 1910–1922, and Liverpool Wavertree, 1922–1923
• Harold D. Smith (1898–1947), American civil servant
• Harold Smith (musician), British jazz drummer featured on the album Big Blues
• Harold Smith (Twin Peaks), fictional television character
• J. Harold Smith (1910–2001), Southern Baptist evangelist and founder of Radio Bible Hour
• Harold Smith (racing driver), 1961 MARC Drivers Champion
• Harold J. Smith (1912-1980), TV actor better known as Jay Silverheels