1904 in sports describes the year's events in world sport.
- World governing body FIFA is founded. The football associations of England, Scotland, Wales and Ireland do not join at this time.
- Formation of the Austrian Football Association (Österreichischer Fußball-Bund or ÖFB)
- Benfica founded in Lisbon as the Grupo Sport Lisboa. In 1908, it merges with SC de Benfica to form Sport Lisboa e Benfica (SL Benfica).
- Formation of the Swedish Football Association (Svenska Fotbollförbundet or SvFF)
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