Jacob Panken (January 13, 1879 – February 4, 1968) was an American socialist politician, best remembered for his tenure as a New York municipal judge and frequent candidacies for high elected office on the ticket of the Socialist Party of America.
Jacob Panken was born January 13, 1879, in Kiev, Ukraine, then part of the Russian Empire. He was the son of ethnic Jewish parents, Herman Panken and Feiga Berman Panken. His father was employed as a merchant. The family emigrated to the United States in 1890, arriving at New York City, a city in which the family settled.
Panken went to work at age 12, working first making purses and pocketbooks. He later worked as a farmhand, a bookkeeper, and an accountant.
Panken married the former Rachel Pallay on February 20, 1910. His wife would eventually be a Socialist Party politician in her own right, running for the New York City Board of Aldermen in 1919 and for New York State Assembly in 1928 and 1934.
In 1901, Panken left accountancy to go to work as an organizer for the International Ladies' Garment Workers' Union. Returning to the industry in which he first worked as a child, Panken was an organizer of the Purse and Bag Workers' Union in 1903.
Panken graduated from New York University Law School in 1905 and became a practicing attorney in the city.
An outspoken opponent of World War I, Panken was a member of the People's Council for Democracy and Peace in 1917.
Panken attended the 1912 National Convention of the Socialist Party of America (SPA), to which he delivered the report of the "Jewish Socialist Agitation Bureau," forerunner of the Jewish Socialist Federation.