Hayim Greenberg was a Jewish-American thinker and Labor Zionist thinker. He was the head of Poalei Zion and he was the editor along with Marie Syrkin of the important American Zionist journal Jewish Frontier. Its writers included David Ben-Gurion, Moshe Shertok, Sholom Asch and Maurice Samuel.
He edited a literary journal, Kadima, in Kiev in 1920 with Koigen and Fischel Schneerson.
