| Acronym | Definition |
|---|
| GSL | GNU Scientific Library |
| GSL | General Sales List |
| GSL | Great Salt Lake |
| GSL | Graduate School of Law (various locations) |
| GSL | Good Shepherd Lutheran (various locations) |
| GSL | Global Solutions Lab |
| GSL | Grammar Specification Language |
| GSL | Global Solution Lead |
| GSL | Gateway Services Limited |
| GSL | Greater Spokane League (sports league) |
| GSL | Gold Standard Laboratories (record label) |
| GSL | Graduate Student Life (various schools) |
| GSL | Guaranteed Student Loan |
| GSL | Group Scout Leader |
| GSL | Galatasaray Lisesi (Galatasaray High School, Turkey) |
| GSL | Global Shipping Logistics (New York, NY) |
| GSL | Gravelly Sandy Loam |
| GSL | Guns Save Lives (Savoy, IL) |
| GSL | Ground Surface Level (civil engineering) |
| GSL | Game System License |
| GSL | Government Student Loan (various locations) |
| GSL | Grammar Specification Language (speech and VoiceXML applications) |
| GSL | Global Starcraft League (gaming group) |
| GSL | Gain-Switched Laser (optics) |
| GSL | Gender and Sexuality Law (Columbia University; New York) |
| GSL | Gamestar League (gaming group) |
| GSL | General Sales Licence (medicine) |
| GSL | Generalized Substitution Language (formal methods) |
| GSL | Guaranteed Stafford Loan |
| GSL | Glock Shooting League |
| GSL | Generalized Smallest Last (Ordering) |
| GSL | Gemini Sound and Lighting |
| GSL | Grid Simulation Laboratory |