Pay Up (1933 – 16 July 1960) was a British Thoroughbred racehorse and sire. As a two-year-old in 1935 he showed promise as he won one race and was place in his other three starts. In the following spring he won the Free Handicap and then recorded his biggest success in the 2000 Guineas. He started favourite for Epsom Derby but finished fourth, sustaining leg injuries which ended his track career. He had little success as a breeding stallion.