Portal:History of science/Selected anniversaries/July 22
- 1711 - Birth of Georg Wilhelm Richmann, Russian physicist (d. 1753)
- 1755 - Birth of Gaspard de Prony, French mathematician (d. 1839)
- 1784 - Birth of Friedrich Bessel, German mathematician and astronomer (d. 1846)
- 1802 - Death of Marie François Xavier Bichat, French anatomist (b. 1771)
- 1826 - Death of Giuseppe Piazzi, Italian astronomer (b. 1746)
- 1887 - Birth of Gustav Ludwig Hertz, German physicist, Nobel laureate (d. 1975)
- 1888 - Birth of Kirk Bryan, American geologist (d. 1950)
- 1888 - Birth of Selman Waksman, Ukrainian/American biochemist, Nobel laureate (d. 1973)
- 1922 - Death of Jokichi Takamine, Japanese chemist (b. 1854)