| 1161 | Prairie Road Solutions Inc | Saskatoon |
| 1162 | Prakash Consulting Ltd. | Prince Albert |
| 1163 | Pressure Vessel Engineering | St. Jacobs |
| 1164 | Primary Engineering and Construction Corporation | Winnipeg |
| 1165 | PRO Engineering Inc. | Winnipeg |
| 1166 | Pro Watts Inc. | Markham |
| 1167 | Progesys inc. | Laval, |
| 1168 | Progressive Engineering & Consulting | Paradise |
| 1169 | PWA Engineering Ltd. | Saskatoon |
| 1170 | QDI | Gatineau |
| 1171 | R. E. Poisson Engineering | Guelph |
| 1172 | R. J. England Consulting Ltd. | Regina |
| 1173 | R. V. Anderson Associates Limited | Dartmouth |
| 1174 | R. V. Anderson Associates Limited | Fredericton |
| 1175 | R. V. Anderson Associates Limited | Kitchener |
| 1176 | R. V. Anderson Associates Limited | St. Catharines |
| 1177 | R. V. Anderson Associates Limited | St. John's |
| 1178 | R.A.N.D. Engineering Corporation | Mississauga |
| 1179 | R.J. Bartlett Engineering Ltd. | Fredericton |
| 1180 | R.J. Bartlett Engineering Ltd. | Halifax |
