- Apr 1 1st edition of Dutch newspaper "The People"
- Apr 2 1st edition of The Volk published (Amsterdam)
- Apr 4 Assassination attempt on Prince of Wales, later British King Edward VII when shot by Jean-Baptiste Sipido in protest over Boer war
- Apr 4 British garrison of Reddersberg surrenders to Boer general De Wet
- Apr 5 Attempted assassination of Edward Prince of Wales in Brussels, fails
Boxing Title Fight
Apr 6 James J. Jeffries KOs Jack Finnegan in 1 for heavyweight boxing title
James J. Jeffries
Event of Interest
Apr 11 The first modern submarine designed and built by John Philip Holland is purchased by the U.S. Navy
John Philip Holland
- Apr 12 The US Congress passes the Foraker Act, establishing Puerto Rico as an unincorporated territory (effective 1 May)
- Apr 14 Veteran's Hospital at Ft Miley forms
- Apr 15 Exposition Universelle (World's Fair) in Paris opens (till 12th Nov)
- Apr 15 An early 50 mile race is won by an electric car in over 2 hrs
- Apr 16 US Post Office issues 1st books of postage stamps
- Apr 17 7 high chiefs of American Samoa sign Instrument of Cession
- Apr 19 4th Boston Marathon won by Jim Caffrey of Canada in 2:39:44.4
- Apr 19 Highest scoring opening game, Phils beat Braves 19-17 in 10
- Apr 23 1st know occurrence of word "hillbillie" (NY Journal)
- Apr 26 AL opener in Cleveland draws 6,500
- Apr 30 The "Hawaiian Organic Act" is enacted by US Congress making Hawaii a US territory
- Apr 30 165 lb Robert Fitzsimmons KOs 305 lb Ed Dunkhost in a boxing match
- Apr 30 Casey Jones dies heroically in a train wreck at Vaughn, Mississippi, while driving Cannonball Express (immortalized in"Ballad of Casey Jones")