WDL
WDL stands for:
- Valuables service provider , according to the Bundesbank, the definition for cash transport companies
- World Definition Language , the scripting language of the earlier version of the 3D GameStudio 3D computer game development system
- World Digital Library , a UNESCO project
- Waveform Description Language , description language for software defined radio
- WDL Aviation (ICAO code), German charter airline
- WDL Luftschiffgesellschaft , German airship company from Mülheim an der Ruhr, a subsidiary of the WDL Group
