WMB may refer to:
- The IATA code for Warrnambool Airport in Australian state of Victoria
- The IBM WebSphere Message Broker software
- The ISO 639 code for the Wambaya language spoken in the Australian Northern Territory
- The Wetzikon–Meilen tramway in the Swiss canton of Zürich
- The Western Mustang Band, a marching band for Western University in London, Ontario, Canada
- The National Rail station code for Wembley Central station in London, England