| Government of Prince Edward Island | |
| Government of Saskatchewan | |
| Government of Yukon | |
| Govital Internet | Ontario |
| GowebCanada | Quebec |
| Goyette Info Plus | Quebec |
| GP Systems | Ontario |
| GPG-Solutions | Quebec |
| GPHY, Inc. | |
| GPNetworks | Alberta |
| GPS Central | Alberta |
| GPS City Canada | Alberta |
| GPS Police, Inc. | Alberta |
| GPS Tracking Canada | Ontario |
| GPTs Hunter | |
| GPUx, Inc. | |
| GPX Technologies, Inc. | |
| Gra web site design | Ontario |
| Grabb | |
| GraceCore | Ontario |
| Grade A | Ontario |
| Graden Systems, Inc. | Alberta |
| Gradient Ascent | |
| Gradientos | |
| Graf | Quebec |
| GRAF informatique | Quebec |
| Grafea | Quebec |
| Graffite, Inc. | Ontario |
| Grafik Communication | Quebec |
| Grafika Designs | Quebec |
| GrafP Technologies, Inc. | Quebec |
| Graham White Consulting | Ontario |
| GrainFox | |
| Graitec | |
| Graitec, Inc. | Quebec |
| GraJay Enterprises | |
| Granby Industriel | |
| Grand Estate Marketing | |
| Grand Matrix Consulting, Inc. | Alberta |
| Grandite | Quebec |
| GrandRavine Software Ltd | Ontario |
| Grandway Marketing, Inc. | |
| Granify | Alberta |
| Granit Informatique | |
| Granite Consulting | Alberta |
| Granville Software, Inc. | Alberta |
| Graph Synergie | |
| Graphem Solutions | |
| GrapheneOS | |
| Graphic Communications Group | Prince Edward Island |