1789 in sports

1789 in sports describes the year's events in world sport.

Boxing
Events
 * 11 February — Tom Johnson retained his English championship with a victory over Michael Ryan at Rickmansworth in 12 round 33 minute fight.
 * September — Tom Johnson was scheduled to fight "Big" Ben Brain but it was not held because Brain was ill.
 * 22 October or 22 November, depending on source — Tom Johnson retained his English championship with a victory over Isaac Perrins at Banbury in the 62nd round of a fight lasting one hour 15 minutes.
 * 23 October — "Big" Ben Brain defeated Jack Jacombs at Banbury in a 1-hour 25 minute to 1 hour 26 minute 36th round fight.
 * 18 December — "Big" Ben Brain defeated Tom Tring in a 19-minute 12th round fight at Dartford.

Cricket
Events England
 * John Sackville, 3rd Duke of Dorset, organised an international tour of English cricketers to France, but it was abandoned following the outbreak of the French Revolution
 * Most runs – Billy Beldham 306
 * Most wickets – Robert Clifford 39

Horse racing
England
 * The Derby – Skyscraper
 * The Oaks – Tag
 * St Leger Stakes – Pewett