Tontine (foaled 1822) was a British Thoroughbred racehorse and broodmare who won the classic 1000 Guineas at Newmarket in 1825. When the other horses entered in the race were withdrawn, Tontine became the only horse to win a classic by walkover. In a racing career which lasted from April 1825 until April 1826 she ran eight times and won three races. Unlike many of her near relatives, Tontine made no impact as a broodmare.