Finkelstein Osip (1884–1941) — lawyer, public figure.

Osip Finkelstein was born in January 1884 in Grodno; his father’s name was Boris.

In 1907, he graduated from the Faculty of Law of Saint Petersburg University. From 22 December 1907, he worked as an assistant to a sworn attorney.

From 1908, he lived in Riga, where he was an assistant to sworn attorney Z. Jakobi. From 16 March 1913, he became a sworn attorney in Riga.

In the 1920s–1930s, he practiced as a sworn attorney in Riga. He was a member of the Russian Club of Riga and, from 1932, a member of the Russian Legal Society in Latvia.

During the Soviet occupation in 1940, Osip Finkelstein worked as a trader. During the German occupation, he was imprisoned in the Riga Ghetto, where he served as head of the Legal Commission of the Jewish Council (Judenrat). He was murdered in December 1941.

Osip Finkelstein was married and had a daughter, Tatyana (born 27 December 1914); this marriage ended in divorce.

In 1920, he married for the second time — to Evgenia Zilpert (born 17 April 1885). They had a daughter, Anna Maria (born 7 July 1921). The marriage ended in divorce in 1928.