| Acronym | Definition |
|---|
| MECA➣Maine College of Art |
| MECA➣Middle East Children's Alliance |
| MECA➣Maritime Electronic Commerce Association |
| MECA➣Manufacturers of Emission Controls Association (Washington, DC) |
| MECA➣Mars Environmental Compatibility Assessment (NASA JPL) |
| MECA➣Marriage Equality California |
| MECA➣Montana Electric Cooperatives Association |
| MECA➣Metropolitan Emergency Communications Agency (Marion County, Indiana) |
| MECA➣Middle East Citizens Assembly |
| MECA➣Muslim Educational and Cultural Association |
| MECA➣Museum of Ephemeral Cultural Artifacts |
| MECA➣Metal Castings |
| MECA➣Malleable Embedded Communications Accelerator |
| MECA➣Minority E-Commerce Association |
| MECA➣Medical Equipment Compliance Associates, LLC (Oak Creek, WI) |
| MECA➣Michigan Exploratory Center on the Demography of Aging |
| MECA➣Manitou Environmental Citizens Action |
| MECA➣Missile Electronics Computer Assembly |
| MECA➣Map Exercise Computer Assistance |
| MECA➣Modification, Extension, and Consolidation Agreement |
| MECA➣Michigan Electrical Contractors Association |
| MECA➣Microwave Electronic Components of America (Denville, NJ) |