List of Famous people who died in 1919

Paul Gustav Samuel Stäckel was a German mathematician, active in the areas of differential geometry, number theory, and non-Euclidean geometry. In the area of prime number theory, he used the term twin prime for the first time.

Richard Fleming St Andrew St John (1839–1919) of Ealing was an English orientalist.

Ludwig Wolff, born in Neustadt in Palatinate, was a German chemist.

Hermann Emil Louis Fischer FRS FRSE FCS was a German chemist and 1902 recipient of the Nobel Prize in Chemistry. He discovered the Fischer esterification. He also developed the Fischer projection, a symbolic way of drawing asymmetric carbon atoms. He also hypothesized lock and key mechanism of enzyme action. He never used his first given name, and was known throughout his life simply as Emil Fischer.

Theodoor Herman "Theo" de Meester was a Dutch politician of the defunct Liberal Union (LU) now merged into the People's Party for Freedom and Democracy (VVD) and economist. He served as Prime Minister of the Netherlands from 17 August 1905 until 12 February 1908.