Surfside (foaled January 21, 1997) is an American Thoroughbred racehorse and broodmare. She was one of the best juvenile fillies in North America in 1999, winning four of her six races including the Frizette Stakes and the Hollywood Starlet Stakes as well a finishing third in the Breeders' Cup Juvenile Fillies. In the spring of the following year she won the Santa Ysabel Stakes, Las Virgenes Stakes and the Santa Anita Oaks and returned from injury to win the Clark Handicap. She was retired after two unsuccessful races as a four-year-old.