Portal:History of science/Selected anniversaries/March 25
- 1539 - Birth of Christopher Clavius, German mathematician (d. 1612)
- 1561 - Death of Conrad Lycosthenes, French-born German philosopher and encyclopedist (b. 1518)
- 1655 - Saturn's largest moon, Titan, is discovered by Christiaan Huygens
- 1712 - Death of Nehemiah Grew, English naturalist (b. 1641)
- 1800 - Birth of Heinrich von Dechsen, German geologist (d. 1889)
- 1818 - Death of Caspar Wessel, Danish mathematician (b. 1745)
- 1946 - Birth of Maurice Krafft, French vulcanologist (d. 1991)
- 1952 - Birth of Antanas Mockus, Colombian mathematician