Vespa was a British Thoroughbred racehorse and broodmare who won the classic Oaks Stakes at Epsom Downs Racecourse in 1833. The filly's win at Epsom, a 50/1 upset, was the only success in her first two seasons of racing. She produced her best form as a four-year-old when she won four times, including three important races at Newmarket Racecourse. At the end of her British racing career she was sold and exported to Hungary.

The Oaks Stakes is a Group 1 flat horse race in Great Britain open to three-year-old fillies. It is run at Epsom Downs over a distance of 1 mile, 4 furlongs and 6 yards, about 1½ miles, and it is scheduled to take place each year in late May or early June. It is the second-oldest of the five Classic races, after the St Leger. Officially the Betfred Oaks, it is also popularly known as simply The Oaks. It has increasingly come to be referred to as the Epsom Oaks in both the UK and overseas countries, although 'Epsom' is not part of the official title of the race.)