VCL may refer to:
Computing Varnish Configuration Language, a domain-specific language used for configuring the Varnish Proxy / Server Video Coding Layer, a layer in H.264/AVC and HEVC Virus Creation Laboratory, an MS-DOS program designed to create computer viruses Visual Component Library, a framework for building user interfaces in Delphi, C++Builder and Python Visual Class Library, an internal part of OpenOffice.org and LibreOffice Voluntary collective licensing, an alternative approach to solve the problem of software piracy
Other uses Vinculin, a mammal protein Vickers-Carden-Loyd tankette, a British tankette Voluntary Committee of Lawyers, a former organization to repeal prohibition of alcohol in the US Vampire Cheerleaders, a manga series Chu Lai Airport (IATA code: VCL)