WMBB-WOK was a high-powered radio station located in Homewood, Illinois, United States, a suburb of Chicago. It was deleted by the Federal Radio Commission (FRC) on September 1, 1928, as part of its implementation of General Order 32, which was used to reduce of the number of U.S. radio stations.
WMBB-WOK's owners responded with a series of court challenges to have the license reinstated, which lasted until 1932, but were all unsuccessful. These cases helped to establish the legitimacy of the Radio Act of 1927 and its Davis Amendment provisions, as well as the establishment of the FRC and its authority to regulate radio.