| HGS | Haig Girls School 
| Others |
| HGS | Hall of Graduate Studies
| Others |
| HGS | Harajuku Girl S
| Others |
| HGs | Harvard Graphics
| Others |
| HGS | Hastings, Freetown, Sierra Leone
| Others |
| HGS | HAVI Global Solutions
| Others |
| HGS | Head Gasket Set
| Others |
| HGS | Head up Guidance System
| Others |
| HGS | Health General Secretriat
| Others |
| HGS | Heavy Gauge Strings
| Others |
| HGS | Helmholtz Graduate School
| Others |
| HGs | High Datarate Gateway Switch
| Others |
| HGS | High Gain Servo
| Others |
| HGS | High Gravity Solids
| Others |
| HGS | Hightower Geotechnical Services, Inc.
| Others |
| HGS | Highway Geology Symposium
| Others |
| HGS | Hillsdale General Store
| Others |
| HGS | Hinduja Global Solutions
| Company |
| HGS | His Goofiness Ship
| Others |
| HGS | Hitachi Global Storage
| Others |
| HGS | Hitchin Girls School
| Others |
| HGS | Horizontal General Purpose Standard
| Others |
| HGS | Host Guardian Service
| Others |
| HGS | House of the Good Shepherd
| Others |
| HGS | Houston Geological Society
| Others |
| HGS | Human Genome Sciences
| Others |
| HGS | Human Genome Sequence
| Others |
| HGS | Hundreds Group Selector
| Others |
| HGS | Hunger Games Simulator
| Others |
| HGS | Hurricane Gate Structure
| Others |
| HGS | Hybrid Gas Station
| Others |
| HGS | Hydraulic Gasket Set
| Others |
| HGS | Hydrogen Gas Saver
| Others |
| HGS | Hydrogen Generating System
| Others |
| HGS | Hydrogenated Glucose Syrup
| Others |
| HGS | Hyundai Grand Starex
| Others |