Bayakoa (October 10, 1984 – June 14, 1997) was a Thoroughbred Champion racehorse bred in Argentina. After racing successfully in that country, Bayakoa was sold to Janis and Frank Whitham and subsequently raced in the United States, mainly in California. In the course of her career, Bayakoa won 13 Grade I stakes races including back-to-back renewals of the Breeders' Cup Distaff. She was the American Champion Older Female Horse of both 1989 and 1990 and was subsequently inducted into the National Museum of Racing and Hall of Fame. In the Blood-Horse magazine List of the Top 100 Racehorses of the 20th Century, she was ranked 95th.