GMSS
| 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) |