| GLS | Across Datafile 
| Others |
| GLS | Gacha Life Series
| Others |
| GLs | Galant Ls
| Others |
| GLS | Gamboa, Lagman, and Sarte Educational center
| Others |
| GLS | Games Learning Society
| Others |
| GLS | Gay and Lesbian Sierrans
| Others |
| GLS | GBAS Landing System
| Others |
| GLS | Gear Lubricant Special
| Others |
| GLS | Gelandewagen Luxus Spezial
| Others |
| GLS | General Legal Services
| Others |
| GLS | General Light Shape
| Others |
| GLS | General Lighting Service
| Others |
| GLS | General Lighting Standard
| Others |
| GLS | General Line School
| Others |
| GLS | General Login System
| Others |
| GLS | General Logistics Systems
| Others |
| GLS | Generalized Least Squares
| Others |
| GLS | Genetic Local Search
| Others |
| GLS | German Language School
| Others |
| GLS | Global Land Survey
| Others |
| GLS | Global Land Surveys
| Others |
| GLS | Global Leadership Summit
| Others |
| GLS | Global Legends Series
| Others |
| GLS | Global Lending Services
| Others |
| GLS | Global Liberal Studies
| Others |
| GLS | Global Linguist Solutions
| Others |
| GLS | Global Link Services
| Others |
| GLS | Global Linking Solutions
| Others |
| GLS | Global Locating System
| Others |
| GLS | Global Location Sensing
| Others |
| GLS | Global Logical Schema
| Others |
| GLS | Global Logistics System
| Others |
| GLS | Global Logistics Systems
| Others |
| GLS | Global Luxury Search
| Others |
| GLS | Google Local Search
| Others |
| GLS | Google Local Services
| Others |
| GLS | Google Location Service
| Others |
| GLS | Goroutine Local Storage
| Others |
| GLS | Government Legal Service
| Others |
| GLS | GPS Landing System
| Others |
| GLS | Graduated Licensing System
| Others |
| GLS | Grand Luxe Special
| Others |
| GLS | Grand Luxe Super
| Others |
| GLS | Grand Luxury Sport
| Others |
| GLS | Great Lake Savants
| Others |
| GLS | Great Lake Swimmers
| Others |
| GLS | Great Local Shops
| Others |
| GLS | Greater Light Stone
| Others |
| GLS | Greater London Staff
| Others |
| GLS | Gross Liquor Sales
| Others |
| GLS | Ground Launch Sequence
| Others |
| GLS | Guest Lecture Series
| Others |
| GLS | Guided Local Search
| Others |
| GLS | Gypsy Lore Society
| Others |
| GLS | Scholes Field, Galveston, Texas USA
| Others |