Nimtzowitsch (Nimtsovich) Yehoshua (Joschua) Leib (07 June 1890, Riga) — public and community activist.

In 1909 Yehoshua Leib Nimtsovich graduated from the Herman School, and in 1914 from the economics department of the Riga Polytechnic Institute. He was active in the leadership of the Trade and Industry Union, and served as a board member of the organization “Malbish Arumim” (a Jewish charitable society providing clothing for the poor).

In 1915 he was a member of the Committee for Assistance to the Homeless in Courland. From 1917 to 1920 he was an organizer and member of the board of the Jewish community in Arkhangelsk.