Helen Bates "Penny" Chenery Tweedy (January 27, 1922 – September 16, 2017) was an American sportswoman. She was born in New Rochelle, New York. Chenery bred and raced Secretariat, the 1973 winner of the Triple Crown. In addition to breeding Secretariat, Chenery bred Saratoga Dew, who became the first New York-bred horse to ever win an Eclipse Award when the filly was voted the 1992 American Champion Three-Year-Old Filly.