| Acronym | Definition |
|---|
| GMRC➣Gas Machinery Research Council (est. 1952; Dallas, TX) |
| GMRC➣Good Moral and Right Conduct (values) |
| GMRC➣Good Manner and Right Conduct |
| GMRC➣Guangzhou Middleware Research Center (South China University of Technology; Guangzhou, China) |
| GMRC➣Gravity and Magnetics Research Consortium (est. 1999; Colorado School of Mines; Golden, CO) |
| GMRC➣Green Mountain Railroad Corporation |
| GMRC➣Green Monkey Renal Cells (biology) |
| GMRC➣Grecian Magnesite Research Center |