| 901 | Keller Engineering Associates Inc. | Ottawa |
| 902 | Keller Engineering Associates Inc. | Kingston |
| 903 | Kerr Wood Leidal Associates Ltd. | Burnaby |
| 904 | Kerr Wood Leidal Associates Ltd. | Nelson |
| 905 | Kerr Wood Leidal Associates Ltd. | Vernon |
| 906 | Kerr Wood Leidal Associates Ltd. | Victoria |
| 907 | Kerry T. Howe Engineering Limited | St. Catharines |
| 908 | KGS Group | Winnipeg |
| 909 | KGS Group | Mississauga, |
| 910 | KGS Group | Regina |
| 911 | KGS Group | Thunder Bay |
| 912 | Kiewit Engineering Group Canada ULC | Burnaby |
| 913 | Kirkland Engineering Ltd. | Peterborough |
| 914 | Klohn Crippen Berger Ltd. | Belo Horizonte, Minas Gerais |
| 915 | Klohn Crippen Berger Ltd. | Calgary |
| 916 | Klohn Crippen Berger Ltd. | Cuenca |
| 917 | Klohn Crippen Berger Ltd. | Edmonton |
| 918 | Klohn Crippen Berger Ltd. | Fredericton |
| 919 | Klohn Crippen Berger Ltd. | Lima |
| 920 | Klohn Crippen Berger Ltd. | Montreal |
