Beadsman (1855–1872) was a British Thoroughbred racehorse and sire. In a career that lasted from July 1857 to June 1858, he ran seven times and won five races. He was unbeaten as a three-year-old and recorded his most important success in the 1858 Epsom Derby. He was retired to stud at the end of the season and became a successful stallion, siring the winners of several important races.