UDL

UDL may refer to:


 * Universal Data Link, a file format storing information about database connections
 * Universal Design for Learning, an educational framework
 * University of Lleida (Universitat de Lleida), a university in Lleida, Spain
 * Urban debate league, a high school debate teams group in the United States
 * User defined literals, ways to customize literals in C++ programming language since C++11.