| 281 | Bouthillette Parizeau inc. | Laval |
| 282 | Bouthillette Parizeau inc. | Lévis |
| 283 | Bouthillette Parizeau inc. | Longueuil |
| 284 | Bouthillette Parizeau inc. | New Westminster |
| 285 | Bouthillette Parizeau inc. | Ottawa |
| 286 | Bouthillette Parizeau inc. | Québec |
| 287 | Brown and Caldwell | Burnaby |
| 288 | Brownlee Beaton Kreke (Regina) Ltd. | Regina |
| 289 | Brunswick Engineering & Consulting Inc. | Saint John |
| 290 | BST Global | Tampa |
| 291 | Buchan, Lawton, Parent Ltd | Ottawa |
| 292 | Buchan, Lawton, Parent Ltd | Toronto |
| 293 | Building Innovation | Hamilton |
| 294 | Building Innovation | Vaughan |
| 295 | Bunt & Associates Engineering Ltd. | Victoria |
| 296 | Bunt & Associates Engineering Ltd. | Calgary |
| 297 | Bunt & Associates Engineering Ltd. | Edmonton |
| 298 | Bunt & Associates Engineering Ltd. | Kelowna |
| 299 | Bunt & Associates Engineering Ltd. | Vancouver |
| 300 | Bush, Bohlman & Partners LLP | Vancouver |
