Portal:History of science/Selected anniversaries/March 12
- 1824 - Birth of Gustav Kirchhoff, German physicist (d. 1887)
- 1835 - Birth of Simon Newcomb, American astronomer and mathematician (d. 1909)
- 1838 - Birth of William Henry Perkin, English chemist (d. 1907)
- 1863 - Birth of Vladimir Vernadsky, Russian mineralogist (d. 1945)
- 1880 - Birth of Henry Drysdale Dakin, British-American biochemist, known for the Dakin-West reaction (d. 1952)
- 1907 - Birth of Dorrit Hoffleit, American astronomer (d. 2007)
- 1925 - Birth of Leo Esaki, Japanese physicist, Nobel laureate
- 1991 - Death of Ragnar Granit, Finnish neuroscientist, Nobel laureate (b. 1900)