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
See also Sadler (name), its abbreviation