MEA or Mea may refer to:
- Manx Electricity Authority
- Materials and Equipment Acceptance, an agency that examines and provides approval for certain manufactured equipment for use in New York City
- Membrane Electrode Assembly, part of a PEM fuel cell
- Mercaptoethylamine-2, an organic chemical compound
- Metropolitan Employment Area, a type of Urban Employment Area as defined by the Center for Spatial Information Service, the University of Tokyo
- Michigan Education Association
- Middle East Airlines, flag carrier of Lebanon
- Middle East & Africa Region of Little League World Series in baseball
- Middle East and Asia
- Millennium Ecosystem Assessment
- Minimum Enroute Altitude, the recommended minimum altitude for a segment of an airway
- Ministry of External Affairs
- Minnesota Education Association
- Monoethanolamine, an organic chemical compound
- Multielectrode array or multi-electrode array to record activity from populations of neurons
- Multilateral Environmental Agreement
Read more about MEA: People, Fictional Characters