| GSP Partner | Walloon Brabant |
| Guardsquare N.V. | Flemish Brabant |
| H&H Informatique | |
| Hack Belgium Labs | |
| Hackerspace Brussels | |
| HALFIN S.A. | Brussels-Capital |
| Halos Websites | Antwerp |
| HandSoft Computer Solutions N.V. | |
| Handsom webdesign | East Flanders |
| Hanna Solutions | |
| Happy Volcano | |
| Harras Network C.V.B.A. | Antwerp |
| Haute école Albert Jacquard | |
| Haute école Bruxelles-Brabant | |
| Haute école Charlemagne | |
| Haute école de la Province de Namur | |
| Haute école de Namur-Liège-Luxembourg | |
| Haute école en Hainaut | |
| Haute école Francisco Ferrer | |
| Haute école Galilée | |
| Haute École Léonard de Vinci | |
| Haute école libre de Bruxelles | |
| Haute École Libre Mosane | |
| Haute école Liège | |
| Haute école Louvain en Hainaut | |
| Haute école Lucia de Brouckère | |
| Haute école Robert Schuman | |
| Hawkfield | East Flanders |
| Hebergeur.be | Hainaut |
| Heens | Brussels-Capital |
| Heens IT Consultancy | |
| Hello Customer | |
| HEMMIS N.V. | West Flanders |
| HERMES ECS S.A. | Walloon Brabant |
| Hestia IT | |
| Hex-Rays S.A./N.V. | Liège |
| HFInformatique S.P.R.L. | Liège |
| Hitechpc | Liège |
| HNM Solutions | |
| HOGENT | |
| Hogeschool PXL | |
| Hogeschool VIVES | |
| Honeycomb | |
| Hosted Power | |
| Houff@-info S.P.R.L. | Luxembourg |
| House of HR | |
| House of Talents | |
| Howest, de Hogeschool West-Vlaanderen | |
| hsbcad | East Flanders |
| HSC Computers B.V. | Antwerp |