Proletpen (Yiddish: פּראָלעטפּען‎) was an organization of Yiddish language writers in the New York City, United States. Proletpen was founded on September 13, 1929 as a continuation of the Frayhayt Writers Association (which had suffered mass resignations after the newspaper Frayhayt denounced the role of Zionists in the 1929 Palestine riots). The name 'Proletpen', a Russian-style Yiddish concoction of proletarische pen ('Proletarian pen'), was projected as an antonym of the Yiddish PEN Club. The group was affiliated with the Moscow-based . Proletpen predated the John Reed Clubs, a grouping of American English-language progressive writers, by a month.