1804 in sports

1804 in sports describes the year's events in world sport.

Boxing
Events
 * English champion Jem Belcher remains inactive after losing an eye in 1803.

Cricket
Events England
 * Homerton Cricket Club becomes a first-class team (until 1808).
 * Most runs – Lord Frederick Beauclerk 258 (HS 94)
 * Most wickets – Lord Frederick Beauclerk 17

Horse racing
England
 * The Derby – Hannibal
 * The Oaks – Pelisse
 * St Leger Stakes – Sancho