DCL

DCL or may refer to: 650 in Roman numerals, see 650 (disambiguation)

== Computers == Data Center Linux, see Open Source Development Labs Data Control Language, a subset of SQL Dialog Control Language, a language and interpreter within AutoCAD DIGITAL Command Language, the command language used by most of the operating systems from the former Digital Equipment Corporation (DEC) Double-checked locking, a software design pattern .dcl, source code files for Clean (programming language) .dcl, Delphi Control Library files for Embarcadero Delphi