Editing 1903 in sports (section)

==[[Association football]]==
'''Argentina'''
* [[Racing Club de Avellaneda|Racing Club]], officially founded in [[Avellaneda]], suburb of [[Buenos Aires]] on March 25.{{citation needed|date=December 2016}}
'''Brazil'''
* [[Gremio Foot-Ball Porto Alegrense|Gremio of Porto Alegre]], officially founded on September 15.{{citation needed|date=December 2016}} 
'''England'''
* [[1902-03 Football League|The Football League]] – [[Sheffield Wednesday F.C.|The Wednesday]] 42 points, [[Aston Villa F.C.|Aston Villa]] 41, [[Sunderland F.C.|Sunderland]] 41, [[Sheffield United F.C.|Sheffield United]] 39, [[Liverpool F.C.|Liverpool]] 38, [[Stoke City|Stoke]] 37
* [[1903 FA Cup Final|FA Cup final]] – [[Bury F.C.|Bury]] 6–0 [[Derby County F.C.|Derby County]] at [[Crystal Palace National Sports Centre|Crystal Palace]], London.  This remains the record scoreline in an FA Cup final.
'''Germany'''
* [[1903 German football championship|National Championship]] – [[1. FC Lokomotive Leipzig|VfB Leipzig]] 7—2 [[DFC Prag]] at Hamburg-Altona (after extra time)
* The [[1903 German football championship]] is the first to be sanctioned by the [[German Football Association|Deutscher Fußballbund]] (DFB). Until the formation of the [[Bundesliga]] in 1963, the championship format is based on a knockout competition, contested between the winners of each of the country's top regional leagues.
'''Scotland'''
* [[1902–03 in Scottish football|Scottish Football League]] – [[Hibernian F.C.|Hibernian]]
* [[1903 Scottish Cup Final|1903 Scottish Cup final]] – [[Rangers F.C.|Rangers]] 2–0 [[Heart of Midlothian F.C.|Hearts]] at [[Celtic Park]] (second replay after 1–1 and 0–0 draws previously)<ref>{{cite web |title=Scottish Cup Past Winners {{!}} Scottish Cup {{!}} Scottish FA |url=https://www.scottishfa.co.uk/scottish-cup/archive/scottish-cup-history/scottish-cup-winners/ |website=www.scottishfa.co.uk |access-date=5 February 2021}}</ref>
'''Turkey'''
* [[Besiktas J.K.|Besiktas]], officially founded in [[Istanbul]] on March 19.{{citation needed|date=December 2016}}