Portal:History of science/Selected anniversaries/August 19
- 1646 - Birth of John Flamsteed, English astronomer (d. 1719)
- 1662 - Death of Blaise Pascal, French mathematician, physicist, and philosopher (b. 1623)
- 1822 - Death of Jean Baptiste Joseph Delambre, French mathematician (b. 1749)
- 1913 - Birth of John Argyris, Greek aeronautical engineer, one of the creators of the Finite Element Method (d. 2004)
- 1950 - Death of Giovanni Giorgi, Italian physicist (b. 1871)
- 1968 - Death of George Gamow, Ukrainian-born physicist (b. 1904)
- 1994 - Death of Linus Pauling, American chemist, recipient of the Nobel Prize in Chemistry and Peace (b. 1901)