| Acronym | Definition |
|---|
| GLS➣Galveston (Amtrak station code; Galveston, TX) |
| GLS➣General Logistics Systems |
| GLS➣Graduate Liberal Studies (various schools) |
| GLS➣Generalized Least Squares |
| GLS➣Grand Luxe Super |
| GLS➣Glossary |
| GLS➣Global Link Services |
| GLS➣Global Leadership Series (various locations) |
| GLS➣Great Lake Swimmers (band) |
| GLS➣Gays Lesbicas e Simpatizantes |
| GLS➣General Legal Services |
| GLS➣Glide Slope |
| GLS➣Glass Laminating Solutions (DuPont) |
| GLS➣GPS Landing System |
| GLS➣General Lighting Service |
| GLS➣Gallium Lanthanum Sulfide Glass |
| GLS➣Gay and Lesbian Sierrans |
| GLS➣Guy L Steele (Jargon File author) |
| GLS➣Grace Lutheran School |
| GLS➣Global Labor Strategies |
| GLS➣Ground Launch Sequencer (NASA) |
| GLS➣Grid Location Service (routing) |
| GLS➣GNSS Landing System |
| GLS➣Global Logistics Specialist |
| GLS➣General Ledger System |
| GLS➣Galveston, TX, USA - Scholes Field (Airport Code) |
| GLS➣Global Logistics System |
| GLS➣Greg Larson Sports (Texas) |
| GLS➣Global Listing Service (real estate) |
| GLS➣Global Life Sciences, Inc. |
| GLS➣Global Lifescience Solutions |
| GLS➣Guest Lecturer Series (various organizations) |
| GLS➣Good Luck Selling |
| GLS➣Great Lord Scepter (gaming) |
| GLS➣GoodLink Server |
| GLS➣Georgia Local Section |
| GLS➣Gust Load Alleviation |
| GLS➣Generator Load Sensor |
| GLS➣Global Logical Schema |
| GLS➣Gnome Land Security (World of Warcraft Alliance guild) |
| GLS➣Government Launch Services |
| GLS➣General Line School |
| GLS➣Grand Luxo Super |
| GLS➣Gate Lock Switch |