| Acronym | Definition |
|---|
| MATR➣Montana Associated Technology Roundtables |
| MATR➣Michigan's Assistive Technology Resource (now Michigan’s Integrated Technology Supports) |
| MATR➣Matroos (Dutch) |
| MATR➣Mid-Atlantic Twin Registry (Virginia Commonwealth University; Richmond, VA; est. 1997) |
| MATR➣Minimum Average Time Requirement |
| MATR➣MOPITT (Measurements of Pollution in the Troposphere) Airborne Test Radiometer |