Portal:History of science/Selected anniversaries/October 26
- 1817 – Death of Nikolaus Joseph von Jacquin, Austrian scientist (b. 1727)
- 1849 – Birth of Ferdinand Georg Frobenius, German mathematician (d. 1917)
- 1874 – Birth of Martin Lowry, British chemist (d. 1936)
- 1936 - The first electric generator at Hoover Dam went into full operation
- 1945 – Death of Aleksey Krylov, Russian engineer and mathematician (b. 1863)
- 1989 – Death of Charles J. Pedersen, American Nobel laureate (b. 1904)
- 1992 - The London Ambulance Service was thrown into chaos after the implementation of a new CAD, or Computer Aided Despatch, system which failed
- 2007 – Death of Dr. Arthur Kornberg, American Nobel Prize laureate in 1959 for the discovery of DNA polymerase (b. 1918)