- Apr 3 Frank Gotch wins world heavyweight wrestling championship in 2 hrs
Campbell-Bannerman Resigns
Apr 5 British Prime Minister Henry Campbell-Bannerman resigns
Asquith Prime Minister
Apr 8 H. H. Asquith succeeds Henry Campbell-Bannerman as British Prime Minister
- Apr 12 Fire at the Boston Blacking Company (producer of leather dyes), spreads by high wind, kills 19 and makes 17,000 homeless in Chelsea, Massachusetts
- Apr 13 Groundbreaking for Philadelphia's Shibe Park, home of MLB Athletics (AL), 1909-54, MLB Phillies (NL), 1938-70, and NFL Eagles, 1940-57
- Apr 16 Natural Bridges National Monument forms (Lake Powell, Utah)
Tommy Burns KOs Jewey Smith
Apr 18 Canadian champion Tommy Burns KOs Jewey Smith of England in 5th round at Neuilly Bowling Palace, Paris to retain his world heavyweight boxing title
- Apr 20 12th Boston Marathon won by Tom Morrissey in 2:25:43.2
- Apr 20 Opening day of competition of the New South Wales Rugby League.
- Apr 21 American polar explorer Frederick Cook claims to have been the 1st person reach North Pole on this date (disputed)
- Apr 22 Queensland beat NSW by 171 runs for their 1st cricket win at Gabba
- Apr 23 Denmark, Germany, Britain, France, Netherlands & Sweden sign North Sea accord
- Apr 24 Mr & Mrs Jacob Murdock and their children depart Los Angeles in a Packard Thirty, endeavoring to become 1st family to travel across United States by car; arrive in NYC 32 days, 5 hours and 25 minutes later
- Apr 27 IV Summer (Modern) Olympic Games open in London
Admirals
Aviators
Gangsters
Generals
Industrialists
Suffragists