WGNU (920 AM) is a commercial radio station licensed to St. Louis, Missouri, and serving the Greater St. Louis media market. The station is owned by Radio Property Ventures and broadcasts a sports gambling radio format, with programming from VSiN Radio. WGNU's studios and offices are located on Hampton Avenue in St. Louis, Missouri, while its transmitter is located near the Interstate 255/Illinois Route 255/Interstate 270 interchange, off Chain of Rocks Road in Edwardsville, Illinois.