| Abbreviation | Definition |
|---|---|
| GWTT | Ground/Water Treatment and Technology, Inc. |
| GWTW | Global World Telecom Wholesale |
| GWUI | Geodis Wilson USA Inc |
| GYGC | Guyana Gold Corporation (de-listed) |
| GYOD | Get Your Own Domain |
| GYST | Graystone Company, INC. |
| GZ | Goodyear Zeppelin |
| GZBZ | Gazebo Business |
| GZC | Goodyear- Zeppelin Corporation |
| GZL | G Zavitz Ltd |
| H | Hyperion |
| H&A | Heidebrecht & Associates |
| H&A | Hollywood & Ace |
| H&M | Hennes and Mauritz |
| H&T | Holland & Tisdall |
| H&W | Harland Wolff |
| H&W | Harland & Wolff |
| HA | Henson Associates |
| HABAC | Hull Area Business Advice Centre |
| HABC | Highfield Awarding Body for Compliance |