| Graphic Depictions | British Columbia |
| Graphic Details | British Columbia |
| Graphic Net Marketing | Ontario |
| Graphic Terminal | Ontario |
| Graphic Whizard | Ontario |
| Graphica Impression, Inc. | |
| Graphically Speaking Services, Inc. | British Columbia |
| GraphicDesign4Web | Quebec |
| GraphicRegion.com | British Columbia |
| Graphiscan | |
| Graphissimo | Quebec |
| Graphite Innovation & Technologies, Inc. | |
| Graphite Innovation and Technologies Ltd | |
| Graphite Software | Ontario |
| Graphix Works | Ontario |
| Graphixflo | |
| Graphos | |
| Grass Valley | Quebec |
| GrassRootsDesign | Ontario |
| Gratisites, Inc. | Alberta |
| Gravelet-Multimédia | Quebec |
| Gravit-E Technologies, Inc. | British Columbia |
| Gravité Marketing | |
| Gravity Computers, Inc. | British Columbia |
| Gravity Union Solutions Ltd | |
| GravityStack | Ontario |
| GravityWave Design | Alberta |
| Gravvity | |
| Gray Press Media, Inc. | |
| Gray Routes AI | Ontario |
| Gray Wolf Analytics, Inc. | New Brunswick |
| GrayCyan | |
| Graytek | |
| Great Bear Design | British Columbia |
| Great Canadian Solar | |
| Great Circle Management Corporation | |
| Great Dane Design | British Columbia |
| Great Lakes Software | Ontario |
| Great Plains College | |
| Great Tel Mobility, Inc. | |
| Great West Digital | |
| Greater Miramichi Chamber of Commerce | |
| Greater Moncton Roméo Leblanc International Airport | |
| Greater Toronto Area BSD Users Group | Ontario |
| Greater Toronto Area Linux User Group | Ontario |
| Greater Vancouver Board of Trade | |
| Grebar Systems, Inc. | Manitoba |
| Green Aero Technology, Inc. | |
| Green Analytics | |
| Green Axis Media | Ontario |