1820 in sports

1820 in sports describes the year's events in world sport.

Boxing
Events
 * 1 February — Tom Cribb retains his English championship with a first-round knockout of Jack Carter in London.

Cricket
Events England
 * William Ward scores 278 for MCC v. Norfolk at Lord's, the first known double century and a new world record for the highest individual innings in all forms of cricket, beating James Aylward's score of 167 in 1777. However, the match is not universally recognised as first-class.
 * The original Northamptonshire CCC was founded in 1820 but was subject to substantial reorganisation and reformation in 1878
 * Earliest mention of wicketkeeping gloves
 * Most runs – William Ward 361 (HS 278)
 * Most wickets – George Coles 17 (BB 6–?)

Horse racing
England
 * 1,000 Guineas Stakes – Rowena
 * 2,000 Guineas Stakes – Pindarrie
 * The Derby – Sailor
 * The Oaks – Caroline
 * St. Leger Stakes – St Patrick