Proletarisher signal (, 'Proletarian Signal') was a Yiddish language publication issued from Kaunas, Lithuania 1925-1926. It was an organ of the Kaunas District Committee of the underground Communist Party of Lithuania. The publication was edited by Chaimas Kaplanas and Borisas Galperinas.
Three issues of Proletarisher signal were published. The circulation of Proletarisher signal was some 1,500 copies. It was printed at the clandestine printing house 'Spartako'. The first issue was published in August 1925, the second in December 1925 and the third issue was published in March 1926. Issues 1 and 2 had a 33x26 cm format, whilst the last issue had a 39x27 cm format. Copies were sold for 25 cents.
Once Undzer emes ('Our Truth') began to be distributed inside Lithuania, the publication of Proletarisher signal was discontinued.