- Apr 14 Maximilian Hell, Slovakian astronomer (b. 1720)
Tiradentes
Apr 21 Tiradentes, Brazilian revolutionary and independence fighter (Inconfidência Mineira) considered a national hero, hanged, drawn and quartered in Rio de Janeiro at 45
- Apr 23 Karl Friedrich Bahrdt, German theologian and adventurer, dies at 50
- Apr 25 Johann Friedrich Gottlieb Beckmann, German composer, dies at 54
- Apr 25 Nicolas J Pelletier, French highwayman, 1st person guillotined
- Apr 30 Hans Adolf Friedrich von Eschstruth, composer, dies at 36
- Apr 30 John Montagu, 4th Earl of Sandwich, British statesman who claimed to have invented the sandwich, dies at 73