Events in Sport in 1884
- Feb 7 Canadian Rugby Football Union forms
- Mar 28 46th Grand National: Ted Wilson aboard 10/1 shot Voluptuary wins by 4 lengths from Frigate
- May 1 Catcher Moses Walker is acknowledged as the first African-American to play major league baseball joining the Toledo Blue Stockings
- May 16 10th Kentucky Derby: Isaac Murphy aboard Buchanan wins in 2:40.25
- May 22 1-armed pitcher Hugh Daily fanned 13 hitters
- May 23 12th Preakness: S Fisher aboard Knight of Ellerslie wins in 2:39.5
- May 26 Australian cricket fast bowler Fred Spofforth takes 7-34 & 7-3 against an England XI in a tour match in Birmingham; match over in just 4 hours
- Jun 4 18th Belmont: Jim McLaughlin aboard Panique wins in 2:42
- Jul 10 First day of Test Cricket at Old Trafford, Manchester (1st Test, England v Australia) is washed out
- Jul 15 Wimbledon Men's Tennis: 4 consecutive Wimbledon titles for William Renshaw; beats Herbert Lawford 6-0, 6-4, 9-7
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