Hirschman (Hirschmann, Girshman) Simon (b. 14 February 1912, Vecauce, Courland Governorate) – fighter in the International Brigades during the Spanish Civil War.

Simon Hirshman was the son of Vulf Hirshmanis. He graduated from a gymnasium and was fluent in Yiddish, Latvian, Russian, Spanish, and German. He served in the Latvian Army with the Courland Artillery Regiment. Professionally, he was a weaver and lived in Riga at 14–3 M. Ķēniņu Street.

On 7 June 1937, he legally departed Latvia for the Paris Expo and from there travelled to Spain in June 1937 to join the ranks of the International Brigade. He served as an artilleryman in the Dąbrowski Battalion and later in an anti-tank battery. He completed officer training courses and was wounded four times. Hirschman fought until demobilisation in October 1938.

He fled to France, where he was interned at Camp de Gurs in the Lower Pyrenees (Block G, “Baltic” group). In September 1939, the British government granted him permission to enter and temporarily reside in London, from where he wrote to the Latvian consulate hoping to return home. However, by summer 1940, he was forced to return to France, where he was interned at Camp de Vernet (Block C, 48, Ariège). In August 1940, Latvia issued him temporary documents for repatriation, but he did not return and instead resided in England.

From 1940 to 1947, he served in the merchant navy.

Hirschman published his autobiography in 1965 through the Liesma publishing house in Riga, where he recounted not only his own experiences but also the fate of many Jewish volunteers who fought in Spain.