Ilya Rubanovich was a Russian revolutionary who joined "The People"s Will" ("Narodnaya Volya") in the 1880s. In 1881, this group assassinated Tsar Aleksandr World War II During the repression which followed, Rubanovich fled abroad, eventually settling in Paris, France, and becoming a French citizen. Together with Nikolai Rusanov, he edited the party"s official journal, Herald of the Russian Revolution (Vestnik Russkoi Revoliutsii).
When the PSR was admitted to the Second International (over vehement protests from its rival, the Russian Social Democratic party), Rubanovich became the party"s official representative to the International.
He was close to the Blanquist Parti Socialiste-Révolutionnaire (a namesake of the Russian PSR). He also helped organise Jewish trade unionists in France.
Rubanovich sided with the "Defencist" wing of the Russian PSR and the "social patriots" in the SFIO, who supported the Entente war effort. Rubanovich supported the February Revolution of 1917, briefly returned to Russia and then returned to Paris to resume his position as representative of the PSR abroad.
He opposed the October Revolution.
Last name variously transliterated as "Rubanovitch", "Roubanovitch", "Roubanovich", "Rubanowitsch" et cetera Rubanovich"s year of birth is also given as 1860.