Arthur Ivar Appleton (October 14, 1915 – January 15, 2008) was a businessman from the Northbrook area of Chicago. He lived part of the year in Chicago and split time between his Indian Creek estate near Miami Beach, Florida, and his thoroughbred farm, Bridlewood Farm in Ocala, Florida. He was one of the leading thoroughbred horse breeders and owners in the United States. He made his fortune in the family's electrical supply business, Appleton Electric Company, founded by his father, Albert Ivar Appleton, in Chicago in 1903.