| 721 | GHD Limited | St. Catharines |
| 722 | GHD Limited | Toronto |
| 723 | GHD Limited | Vancouver |
| 724 | GHD Limited | Whitby |
| 725 | GHD Limited | Windsor |
| 726 | GM BluePlan | Guelph |
| 727 | GM BluePlan | Exeter |
| 728 | GM BluePlan | Kitchener |
| 729 | GM BluePlan | Listowel |
| 730 | GM BluePlan | Owen Sound |
| 731 | Gomex Engineering | Charlottetown |
| 732 | Gomex Engineering | Charlottetown |
| 733 | Goodkey Weedmark & Associates Limited | Ottawa |
| 734 | Greenview Environmental Management Limited | Bancroft |
| 735 | GRIT Engineering Inc | Stratford |
| 736 | Ground Engineering Consultants Ltd. | Regina |
| 737 | Groupe ABS inc. | Anjou |
| 738 | Groupe ABS inc. | Blainville |
| 739 | Groupe ABS inc. | Gatineau |
| 740 | Groupe ABS inc. | Longueuil |
