Old Hat (foaled in Kentucky in 1959), was an American Thoroughbred racing mare by Boston Doge out of Fine Feathers (1 win in 39 starts), whose sire was Double Jay.
Her sire, Boston Doge, was a multiple stakes winner.
Old Hat raced when the likes of Cicada, Summer Scandal (Co-champion older mare of 1966), Affectionately (no.
81 in the Blood-Horse magazine List of the Top 100 U.S. Racehorses of the 20th Century), Tosmah, Bowl of Flowers, and Venture were also competing.
Among this company, she was voted Champion Female Handicap Horse by the Thoroughbred Racing Association in 1964, although the rival Daily Racing Form chose the three-year-old Tosmah.