| Acronym | Definition |
|---|
| GMSA | General Motors South Africa |
| GMSA | Georgia Middle School Association |
| GMSA | Global Marine Species Assessment |
| GMSA | Greater Manchester Strategic Alliance (UK) |
| GMSA | Green Mountain Self-Advocates |
| GMSA | Gel Mobility Shift Assay |
| GMSA | Gospel Mission of South America |
| GMSA | Greater Memphis Soccer Association (Tennessee) |
| GMSA | Greater Minnesota Speedskating Association |
| GMSA | Ghana Muslim Students Association (Asawasi-Kumasi, Ghana) |
| GMSA | Graduate Management Student Association |
| GMSA | Green Mountain Studio Animals (Faux Pas series) |
| GMSA | Groupe Minoteries SA (Switzerland) |
| GMSA | Globally Minded Student Association |
| GMSA | generalized mean-spherical-approximation |
| GMSA | Government Maglev System Assessment |
| GMSA | Global Management Student Association |
| GMSA | German Market Startup Agency |
| GMSA | Good Morning San Antonio (KSAT morning TV program) |
| GMSA | Generational Ministries South Africa |
| GMSA | General Motors Student Assistance |
| GMSA | Gilbert Main Street Association |
| GMSA | Guaranteed Minimum Sum Assured |
| GMSA | Greater Metropolitan Statistical Area |
| GMSA | Government Mensuration Software Application |
| GMSA | Greater Manassas Service Area |
| GMSA | Global Multivariate Statistical Analysis |
| GMSA | General Maintenance Skills Assessment |
| GMSA | Greater Milwaukee Surgical Associates |
| GMSA | Gender and Media in Southern Africa |
| GMSA | Global Movement Security Application |
| GMSA | Georgia Mountain Soccer Association |
| GMSA | Graduate Music Student Association |
| GMSA | Georgia Main Street Association |
| GMSA | Girls Missionary Society Association |
| GMSA | Seaman Apprentice, Gunner's Mate Striker (US Navy rating) |
| GMSA | Global Maritime Situational Awareness |
| GMSA | Graduate Muslim Students Association |
| GMSA | Gulf of Mexico Statistical Area |