| Acronym | Definition |
|---|
| GMSS➣Global Mobile Satellite System (telecommunications) |
| GMSS➣Geneva Middle School South (Geneva, IL) |
| GMSS➣Gem and Mineral Society of Syracuse (Syracuse, NY) |
| GMSS➣Geylang Methodist Secondary School (Singapore) |
| GMSS➣Geostationary Mobile Satellite Standard (telecommunications) |
| GMSS➣Global Marketing Support Services (University of Arkansas; Fayetteville, AR) |
| GMSS➣Gwent Music Support Service |
| GMSS➣Geriatric Mental Status Schedule (elder care) |