Joseph Günzburg (Osip Gavrilovich Gintsburg,Осип Гаврилович Гинцбург (orIosif-Evzel,Иосиф-Евзель); 1812 inVitebsk – 12 January 1878 in Paris) was a Russian financier and philanthropist who became a baron in 1874. He was the son of Gabriel Günzburg and the father ofHorace Günzburg.

Having acquired great wealth during theCrimean War, Günzburg established a banking firm atSt. Petersburg. There he began to labor on behalf of the welfare of theJewish community. In November 1861, he was appointed by the Russian government as a member of therabbinical commission, the meetings of which lasted five months. He exerted himself to raise the standard of the education of the Jews. To this effect, he founded theSociety for the Promotion of Culture Among the Jews in 1863 with the permission of the Russian government, and he served of as president of the Society till his death. Owing to Günzburg's efforts, the regulations concerning the military service of the Jews were in 1874 made identical with those of the peoples of other creeds. He also instituted a fund for theTalmud Torah religious school ofVilna, his father's native town. The Günzburgs wereennobled by theGrand Duke of Hesse-Darmstadt in 1871, and Joseph received the title ofbaron on 2 August 1874.

• Fuenn,Keneset Yisrael, p. 460;
• Archives Israélites, 1878, p. 89
•   This article incorporates text from a publication now in thepublic domain: Singer, Isidore; et al., eds. (1901–1906)."Günzburg, Joseph Yozel ben Gabriel Jacob".The Jewish Encyclopedia. New York: Funk & Wagnalls.

• "Joseph, Baron Günzburg".Encyclopædia Britannica. 20 July 1998.