| Kerkhoff Technologies, Inc. | British Columbia |
| Kermit Informatique | Quebec |
| Keronsoft | Quebec |
| Kerr Group of Companies | Nova Scotia |
| Kerr Vayne Systems Ltd | Ontario |
| Ketara Software | Ontario |
| Ketchum Killum & Wynn Creative, Inc. | |
| KEV Group | Ontario |
| Kevin's Used Computer Ltd | British Columbia |
| Kevin’s Computing | |
| Key Business Solutions Ltd | |
| Key Computers | Alberta |
| Key Elements | |
| Key Online Traffic | British Columbia |
| KEY27 | Ontario |
| Key:3 Web Design | Ontario |
| Keyano College | |
| KeyData Associates, Inc. | Ontario |
| Keyhole | Ontario |
| Keyhole Security Concepts, Inc. | Ontario |
| Keyin College | Newfoundland and Labrador |
| Keynetz | Ontario |
| Keyona | Ontario |
| Keyoti, Inc. | British Columbia |
| Keyrus Canada | Quebec |
| Keystone Marketing | Quebec |
| Keystone Templates, Inc. | |
| Keystroke.ca | Ontario |
| Keyush Consulting | |
| Keyword Solutions | Ontario |
| Kezber | Quebec |
| KG Canada | Ontario |
| KG Web Solutions | British Columbia |
| KHALSA Softwares | |
| Khieuware Software Solutions | Ontario |
| Ki3 Photonics Technologies, Inc. | |
| KIAI Agency, Inc. | |
| Kiatech Software, Inc. | |
| Kibble Game Studios, Inc. | |
| Kick Point | Ontario |
| Kickbooster, Inc. | |
| KiDa Design, Inc. | Ontario |
| Kids Code Jeunesse | Quebec |
| Kiffcom | |
| Kiite, Inc. | Ontario |
| Kijiji | |
| Kik Interactive | Ontario |
| Kika Marketing and Communications, Inc. | British Columbia |
| Kikker.com | Nova Scotia |
| Kikstart Ecom | |