Tom Spring (born Thomas Winter) (22 February 1795 – 20 August 1851) was an English bare-knuckle fighter. He was heavyweight champion of England from 1821 until his retirement in 1824. After his retirement he became landlord of the Castle Inn at Holborn in London, where he arranged the patronage and contracts of many of the major boxing events of the period while overseeing fair play in the ring.
Spring was born at Witchend in Fownhope, Herefordshire. His true surname was "Winter", which he changed to Spring when he became a professional boxer. His first career was as a butcher, the trade in which he was employed when he had his first known fight in 1812, against John Hollands. He had been encouraged to box from a young age by his father, who had constructed a sand bag for him to train with. Later his father was jailed for debt, which destroyed Spring's relationship with him. In 1814 Spring met the legendary heavyweight champion Tom Cribb who was staying nearby. Cribb was impressed by Spring's prowess, and persuaded him to go to London under his patronage; this was the beginning of Spring's boxing career. That year, Spring travelled to Mordiford and won a fight in 11 rounds, after which he won a £3 stake.
Spring is considered one of the most scientific of the early English boxers, an approach that set him apart from most of his contemporaries. Not possessing a strong punch he honed a fine defense, and a powerful left hook.
Aged 23 Spring twice fought the very experienced Ned Painter, winning the first bout and losing the second. His defeat of Jack Carter in 1819 earned him some notoriety, and he toured the country giving exhibition matches with the reigning English heavyweight champion Tom Cribb. Cribb on his retirement in 1821 handed over the championship title to Spring. To defend the title Spring offered to fight anyone in England. No one challenged him until 1823, when he fought Bill Neat. Neat referred to Spring as a "lady’s maid fighter" because of his weak punch. The fight lasted just 37 minutes, with Spring victorious after knocking Neat down in the first round and cutting him severely in the second. This victory ensured that Spring was officially recognized as the heavyweight champion of England.