Lys Gracieux (Japanese: 'リスグラシュー, foaled 18 January 2014) is a champion Japanese Thoroughbred racehorse. As a two-year-old in 2016 she showed top-class form, winning two of her four starts (including the Artemis Stakes) and finished second in the Hanshin Juvenile Fillies. In the following year she failed to win but was placed in several major races including the Oka Sho and the Shuka Sho. As a four-year-old she won the Tokyo Shimbun Hai and the Queen Elizabeth II Cup as well as running second in the Victoria Mile and the Hong Kong Vase and was awarded the JRA Award for Best Older Filly or Mare. In 2019 she had her most successful season as she took the Takarazuka Kinen in Japan and the Cox Plate in Australia before ending her track career with a victory in the Arima Kinen. She was the 2019