Dr Alexander Charles Stephen FRSE PRPSE (17 December 1893 – 3 June 1966) was a 20th-century Scottish zoologist.
He was born on 17 December 1893 in Garvock manse, near Laurencekirk in Aberdeenshire the son of Rev William Stephen.
His studies of Chemistry and Zoology at Aberdeen University were interrupted by the First World War during which he served with the Special Brigade of the Royal Engineers and was gassed during the First Battle of the Somme in 1916.
He served further at Ypres before being called back to Britain in 1917 to apply his knowledge working in the Chemical Warfare Research Department in London.
[1] He retired in 1958 and died at home, 17 Cammo Crescent in north-west Edinburgh, on 3 June 1966.