| 1121 | Pow Engineering | Ingersoll |
| 1122 | Prairie Road Solutions Inc | Saskatoon |
| 1123 | Prakash Consulting Ltd. | Prince Albert |
| 1124 | Pressure Vessel Engineering | St. Jacobs |
| 1125 | Primary Engineering and Construction Corporation | Winnipeg |
| 1126 | Progesys inc. | Laval, |
| 1127 | Progressive Engineering & Consulting | Paradise |
| 1128 | PWA Engineering Ltd. | Saskatoon |
| 1129 | QDI | Gatineau |
| 1130 | R. E. Poisson Engineering | Guelph |
| 1131 | R. J. England Consulting Ltd. | Regina |
| 1132 | R. V. Anderson Associates Limited | Dartmouth |
| 1133 | R. V. Anderson Associates Limited | Fredericton |
| 1134 | R. V. Anderson Associates Limited | Kitchener |
| 1135 | R. V. Anderson Associates Limited | St. Catharines |
| 1136 | R. V. Anderson Associates Limited | St. John's |
| 1137 | R.A.N.D. Engineering Corporation | Mississauga |
| 1138 | R.J. Bartlett Engineering Ltd. | Fredericton |
| 1139 | R.J. Bartlett Engineering Ltd. | Halifax |
| 1140 | R.J. Burnside & Associates Limited | Barrie |
