Born in Wolkowysk, Poland. Received a good Jewish and secular education. Attended a yeshiva and studied humanities at the Vilna University. Grossman was a teacher in secular Jewish schools in Vilna and active in the Bund. After Russia occupied Lithuania in 1940 and many Bundist activists were arrested, Grossman left Vilna. He arried in Canada in 1941 after spending some time in Japan. In Montreal Grossman was active in Bund, Workmen's Circle, YIVO, Jewish Public Library, the Reisen School where he was principal. Most of all he was active in the Yiddish Committee, whose Bulletin he wrote and published for many years. Grossman wrote essays and articles in the Keneder Adler and in several Yiddish journals. He published two books of essays and monographs. Jacob Grossman died on March 31, 1982 in Miami.