| 921 | Keller Engineering Associates Inc. | Ottawa |
| 922 | Keller Engineering Associates Inc. | Kingston |
| 923 | Kerr Wood Leidal Associates Ltd. | Burnaby |
| 924 | Kerr Wood Leidal Associates Ltd. | Nelson |
| 925 | Kerr Wood Leidal Associates Ltd. | Vernon |
| 926 | Kerr Wood Leidal Associates Ltd. | Victoria |
| 927 | Kerry T. Howe Engineering Limited | St. Catharines |
| 928 | KGS Group | Winnipeg |
| 929 | KGS Group | Mississauga, |
| 930 | KGS Group | Regina |
| 931 | KGS Group | Thunder Bay |
| 932 | KGS Group | Vancouver |
| 933 | Kiewit Engineering Group Canada ULC | Burnaby |
| 934 | KiHL Construction Management Ltd | Georgetown |
| 935 | Kirkland Engineering Ltd. | Peterborough |
| 936 | Klohn Crippen Berger Ltd. | Belo Horizonte, Minas Gerais |
| 937 | Klohn Crippen Berger Ltd. | Calgary |
| 938 | Klohn Crippen Berger Ltd. | Cuenca |
| 939 | Klohn Crippen Berger Ltd. | Edmonton |
| 940 | Klohn Crippen Berger Ltd. | Fredericton |
