Portal:History of science/Selected anniversaries/February 14
- 1468 - Birth of Johann Werner, German mathematician (d. 1522)
- 1838 - Birth of Margaret E. Knight, American inventor, famous as female Thomas Edison, (d. 1914)
- 1848 - Birth of Benjamin Baillaud, French astronomer (d. 1934)
- 1869 - Birth of Charles Wilson, Scottish physicist, Nobel Prize Laureate (d. 1959)
- 1876 - Alexander Graham Bell applies for a patent for the telephone, as does Elisha Gray
- 1894 - Death of Eugène Charles Catalan, Belgian mathematician (b. 1814)
- 1898 - Birth of Fritz Zwicky, Swiss-American physicist and astronomer (d. 1974)
- 1918 - The Soviet Union adopts the Gregorian calendar (on 1 February according to the Julian calendar)
- 1904 - Birth of Charles Oatley, Professor of electrical engineering, (scanning electron microscope), (d. 1996)
- 1917 - Birth of Herbert A. Hauptman, American mathematician, Nobel Prize Laureate
- 1943 - Death of David Hilbert, German mathematician (b. 1862)
- 1961 - Discovery of the chemical elements: Element 103, Lawrencium, is first synthesized at the University of California
- 1975 - Death of Julian Huxley, British biologist (b. 1887)
- 1989 - Death of James Bond, American ornithologist (b. 1900)