Harold Smith
Harold Smith may refer to:
Entertainment
- Harold Jacob Smith, American screenwriter
- Harold J. Smith, TV actor better known as Jay Silverheels
- Harold Smith (Twin Peaks), fictional television character
Politics
- Harold Smith (New Zealand politician), New Zealand MP
- Harold Smith (British politician), MP for Warrington, 1910–1922, and Liverpool Wavertree, 1922–1923
- Harold Gengoult Smith, Australian medical practitioner and Lord Mayor of Melbourne
- Harold D. Smith, American budget director during World War II
- Harold Palmer Smith Jr., assistant secretary of Defense
Science
- Harold Hill Smith, American geneticist
- Harold Smith (scientist), founder and CEO of OyaGen
Sports
- Harold Smith (diver), American diver and Olympic gold medalist
- Harold Smith (gridiron football), American football player
- Harold Smith (sprinter), American sprinter also known as Harold Carman, 2nd in the 220 yards at the 1915 USA Outdoor Track and Field Championships
Other
- Harold Page Smith, United States Navy admiral
- J. Harold Smith, Southern Baptist evangelist
- Harold Smith (detective), art detective