Joseph Cohen, (August 12, 1891 – September 24, 1973) was a Canadian lawyer, academic, and politician.
Born in Russayn, Russian Empire, the son of Myer Cohen, a Jewish clergyman, and Rebecca Benyash, Cohen was with his family when it migrated to Canada in 1892, settling in Montreal, Quebec.
He was elected in 1927 and re-elected in 1931 and 1935.
In 1936, the election results were declared invalid and he did not run in the resulting by-election.From 1952 to 1961, he was a professor of criminal law at McGill University.
He died in Montreal in 1973 and was buried in Montreal in the cemetery of the Congregation Shaar Hashomayim.