- Apr 7 Jacques Charles [Jacques-Alexandre-César Charles], French inventor and balloonist (with Nicholas Robert was 1st to take flight in a hydrogen balloon), dies at 76
- Apr 10 Karl Leonhard Reinhold, Austrian philosopher (elementary philosophy), dies at 65
- Apr 23 Joseph Nollekens, English sculptor (portrait busts, patronized by George III), dies at 85
Assassination
Drug Overdose
Gunshot Wound
Murder
Plane Crash
Suicide