MDW is an acronym with multiple meanings depending on the context:
- Midway International Airport in Chicago, Illinois, USA (IATA airport code: MDW)
- Military District of Washington , a U.S. Army command responsible for the defense of the capital region
- Memorial Day Weekend , commonly abbreviated as MDW in slang and internet usage
- Monocyte Distribution Width , a medical diagnostic parameter used to detect inflammatory responses and sepsis risk in patients
- Minnesota, Dakota and Western Railway , a railway company in the U.S. and Canada
- University of Music and Performing Arts Vienna (in German: Universität für Musik und darstellende Kunst Wien), often abbreviated as mdw
- Other less common meanings include Minimum Daily Wage, Model Driven Workflow, Mass Destruction Weapon, and more
If you specify the context, I can provide a more precise definition of MDW.
