WBTL Views 10 meanings found WBTL is used to refer to the Warsaw Business Tennis League, a web‑based training library, the phrase ‘write between the lines,’ and local library services such as the Willow Branch Township Library. Medical Wheel and Brake Technical Laboratory Miscellaneous Wine behind the label Wats Behind the Lens Whole Body Team Leader Community Write Between The Lines LPTV-34, Toledo, Ohio Academic & Science Willow Branch Township Library Internet Web-Based Training Library Business Wilshire Black Tie Limo Sports Warsaw Business Tennis League