Hague v. Committee for Industrial Organization, 307 U.S. 496 (1939), is a US labor law case decided by the United States Supreme Court.

In Jersey City, New Jersey, Mayor Frank Hague had in 1937 used a city ordinance to prevent labor meetings in public places and stop the distribution of literature pertaining to the Committee for Industrial Organization's cause.

Such use of the streets and public places has, from ancient times, been a part of the privileges, immunities, rights, and liberties of citizens” (Justice Roberts).

District and circuit courts ruled in favor of the CIO, which brought the suit against the mayor for these actions and which was represented by Morris L. Ernst, Spaulding Frazer, Lee Pressman and Benjamin Kaplan.

It took a long time after the 14th Amendment was adopted (1866) and ratified (1868) before the Supreme Court began to use it to assert individual rights against State and local Governments; which amplified the right to peacefully assemble and fight for freedom of speech.