SADL

SADL may refer to:


 * Sainte-Anne-des-Lacs, Quebec
 * The International Civil Aviation Organization airport code for La Plata Airport
 * Semantic Application Design Language, a language for building semantic models
 * Situation Awareness Data Link, an example component of an Enhanced Position Location Reporting System
 * The Southern Alberta Digital Library at the University of Lethbridge
 * System Architecture Description Language, an implementation of an Architecture description language