Moissaye Joseph Olgin (24 March 1878 – 22 November 1939) was a Ukrainian-born writer, journalist, and translator in the early 20th century.

During the First World War, he moved to the United States in 1915, settling in New York City, where he continued his career in journalism.

He was sympathetic to the causes of the Russian Revolution, and first became active in the underground revolutionary movement during his studies at the University of Kyiv.

His writings for Jewish and revolutionary publications earned him some fame among the many Russian Jews, who were heavily oppressed by the government of Tsar Nicholas II.

The tsarist regime ordered his arrest in April 1903 on a charge of organizing Jewish self-defense groups against anticipated pogroms.

He was the author of all the proclamations issued by the Central Committee of the Bund during the Revolution of 1905 while at the same time he prepared literary compositions for the illegal Jewish press.

While editing newspapers and working with these underground organizations he also wrote books, short stories and literary essays.

[3][4] Traveling in Germany at the onset of World War I, he was unable to return to Russia, and immigrated to the United States in 1915.

[4] Shortly after arriving in the United States, Olgin became a regular contributor to the Jewish daily newspaper The Forward.

[1][4] Olgin was the author of numerous books and pamphlets in seven languages: English, Russian, German, French, Polish, Hebrew and Yiddish.