Weekend Surprise (April 8, 1980 – March 13, 2001) was an American Thoroughbred racehorse and dam of 1992 American Horse of the Year A.P. Indy and 1990 Preakness Stakes winner Summer Squall. She was sired by the famous Triple Crown winner Secretariat.In 1992 she was voted the Kentucky Broodmare of the year. Her offspring include Honor Grades, Tiger Ridge, Devongate, Amirati, Weekend Storm, Norway, Eavesdropper, Welcome Surprise, Saithor, and Weekend In Seattle.