1910 in sports describes the year's events in world sport.
- The Football League – Aston Villa 53 points, Liverpool 48, Blackburn Rovers 45, Newcastle United 45, Manchester United 45, Sheffield United 42
- FA Cup final – Newcastle United 2–0 Barnsley at Crystal Palace, London (replay following 1–1 draw at Crystal Palace)
- Manchester United moves from its venue at Bank Street to its present home Old Trafford
- National Championship – Karlsruher FV (0–0) 1–0 Holstein Kiel at Köln
- Foundation of FC St. Pauli (15 May)
- Foundation of Bærum SK (26 March)
- St. Kilda achieves the worst start by a team that did not suffer a winless season, losing its first seventeen games before a huge upset over Carlton. This has been equalled only by Fremantle in 2001 and Greater Western Sydney in 2013.
- Collingwood wins the 14th VFL premiership, defeating Carlton 9.7 (61) to 6.11 (47) at Melbourne Cricket Ground (MCG)
- 22 February — Ad Wolgast outlasts Battling Nelson at Point Richmond, California, to win the World Lightweight Championship by a technical knockout after 40 rounds.
- 4 July — in boxing's first "fight of the century", Jack Johnson knocks out the "great white hope" James J. Jeffries in round 15 to retain his World Heavyweight Championship title.
- 15 October — World Middleweight Champion Stanley Ketchel is shot and killed at Conway, Missouri, by Walter Dipley, a jealous farm worker. Ketchel is rated by many boxing historians as the best middleweight ever. The title remains vacant until 1913.
Lineal world champions
- World Heavyweight Championship – Jack Johnson
- World Light Heavyweight Championship – vacant
- World Middleweight Championship – Stanley Ketchel → vacant
- World Welterweight Championship – vacant
- World Lightweight Championship – Battling Nelson → Ad Wolgast
- World Featherweight Championship – Abe Attell
- World Bantamweight Championship – Monte Attell
- County Championship – Kent
- Minor Counties Championship – Norfolk
- Most runs – Johnny Tyldesley 2265 @ 46.22 (HS 158)
- Most wickets – Razor Smith 247 @ 13.05 (BB 8–13)
- Wisden Cricketers of the Year – Harry Foster, Alfred Hartley, Charlie Llewellyn, Razor Smith, Frank Woolley
- Sheffield Shield – South Australia
- Most runs – Bert Kortlang 656 @ 131.20 (HS 197)
- Most wickets – Jack Saunders 49 @ 17.32 (BB 6–35)
- Currie Cup – not contested
Tour de France
World Figure Skating Championships
- Grand National – Jenkinstown
- 1,000 Guineas Stakes – Winkipop
- 2,000 Guineas Stakes – Neil Gow
- The Derby – Lemberg
- The Oaks – Rosedrop
- St. Leger Stakes – Swynford
- Melbourne Cup – Comedy King
- King's Plate – Parmer
- 15 March — Montreal Wanderers wins the NHA championship and the Stanley Cup. The club then defeats Berlin Dutchmen in a challenge.
- 5 January — National Hockey Association (NHA) commences its inaugural season
- 15 January — Canadian Hockey Association disbands. Ottawa and Montreal Shamrocks join the NHA.
- March — Toronto St. Michael's Majors wins the Allan Cup
- December — NHA loses its Cobalt and Haileybury teams, but gains a Quebec team. The Montreal Canadiens are taken over by George Kennedy's Club Athletique Canadien after threatening legal action.
The Boat Race
- Championship – Oldham
- Challenge Cup final – Leeds 26–12 Hull F.C. at Fartown Ground, Huddersfield (replay, following 7–7 draw at Fartown)
- Lancashire League Championship – Oldham
- Yorkshire League Championship – Wakefield Trinity
- Lancashire County Cup – Wigan 22–5 Leigh
- Yorkshire County Cup – Huddersfield 21–0 Batley
Five Nations Championship
Speed Skating World Championships
- Australian Men's Singles Championship – Rodney Heath (Australia) defeats Horace Rice (Australia) 6–4 6–3 6–2
- Wimbledon Men's Singles Championship – Anthony Wilding (New Zealand) defeats Arthur Gore (GB) 6–4 7–5 4–6 6–2
- Wimbledon Women's Singles Championship – Dorothea Douglass Lambert Chambers (GB) defeats Dora Boothby (GB) 6–2 6–2
- French Men's Singles Championship – Maurice Germot (France) defeats François Blanchy (France): details unknown
- French Women's Singles Championship – Jeanne Matthey (France) defeats Marguerite Broquedis (France): details unknown
- American Men's Singles Championship – William Larned (USA) defeats Tom Bundy (USA) 6–1 5–7 6–0 6–8 6–1
- American Women's Singles Championship – Hazel Hotchkiss Wightman (USA) defeats Louise Hammond (USA) 6–4 6–2
- "Manchester United | English football club". Encyclopedia Britannica. Retrieved 6 February 2021.
- Cyber Boxing Zone
- "Cycling-Tour de France list of winners". Eurosport UK. 26 August 2020. Retrieved 18 February 2021.
- "James Braid | British golfer". Encyclopedia Britannica. Retrieved 30 April 2021.
- "Epsom Derby | History, Winners, & Facts | Britannica". www.britannica.com. Retrieved 30 December 2021.