Jannette (1875–1905), was a British Thoroughbred racehorse and broodmare who won two British Classic Races in 1878. She was one of the leading British two-year-olds of 1877 when she was unbeaten in seven races including the Richmond Stakes at Goodwood. On her first appearance as a three-year-old she was beaten by Pilgrimage in the 1000 Guineas at Newmarket but reversed the form with that filly to win the Oaks at Epsom a month later. Later in the season she defeated some of the season's best colts to win the St. Leger Stakes at Doncaster and added a victory in the Champion Stakes against some of the leading older horses. She was less effective in 1879 but won the Jockey Club Cup on her final appearance. She was then retired to stud, where she had some success.