| Green Bear Graphics | |
| Green Bee 3 | |
| Green Energy Hosting | |
| Green Goal ICT, Inc. | |
| Green Imaging | |
| Green Imaging Technologies, Inc. | New Brunswick |
| Green Lotus Agency | Ontario |
| Green Metrics Technologies Ltd | |
| Green Net Systems Ltd | British Columbia |
| Green Screen Studios | Ontario |
| Green Shield Canada | |
| Green Space | Manitoba |
| Green Story | |
| Green Trial | |
| Green-Light Communications, Inc. | British Columbia |
| Greenbee Software | |
| Greenbee Software, Inc. | Quebec |
| GreenButton Studio, Inc. | Ontario |
| Greencopper | Quebec |
| GreenGhost | British Columbia |
| GreenHosting | Ontario |
| GreenKite Web Solutions | Ontario |
| Greenlight Analytical | Nova Scotia |
| Greenlight Design | New Brunswick |
| GreenLime Consulting | British Columbia |
| Greenlines Technology, Inc. | |
| Greenscience Technologies | |
| GreenSky Capital, Inc. | Ontario |
| GreenSky Ventures | |
| Greensoil PropTech Ventures | |
| Greenspace Solutions, Inc. | |
| Greenspring Bioinnovation Hub | |
| Greentube Pro | British Columbia |
| GreenWave Online, Inc. | Manitoba |
| Greenwood Creative Print | Ontario |
| Greg Bell | British Columbia |
| Greg Fisher | Nova Scotia |
| Gregory Consulting Ltd | Ontario |
| Grey Matter Neurosciences | |
| Greycoat Software, Inc. | Ontario |
| GreyJay Energy | |
| GRG Digital | |
| GRi Simulations, Inc. | |
| GRICS | Quebec |
| Grid Force Solutions, Inc. | |
| GridWay Computing Corporation | Ontario |
| Grig Software | British Columbia |
| GRIP I.T. | |
| Gristmill Marketing | Ontario |
| Grizzly Computers | Saskatchewan |