| Just Dial Communications, Inc. | British Columbia |
| Just Fix It | Ontario |
| Just Ink Services | British Columbia |
| Just Web Agency | |
| JustFood | Ontario |
| Justhosting | Ontario |
| Justin Everett Consulting | British Columbia |
| Justin Jackson | |
| Justin Weedmark | British Columbia |
| JustIt Solution, Inc. | Ontario |
| JustOneCable | Ontario |
| JustSystems Corporation | British Columbia |
| JustWebSolutions | Ontario |
| Justworks | British Columbia |
| JVC Canada, Inc. | Ontario |
| JVPLabs | |
| Jybe Financial, Inc. | |
| K&D Marketing Solution | |
| K&G Software Group | British Columbia |
| K&Y Diamond | |
| K-Designs | Quebec |
| k-eCommerce | Quebec |
| K-V Laptops | Ontario |
| K.S.D. Development | Ontario |
| K2 Geospatial | Quebec |
| K2 Network Services | British Columbia |
| K2BTECH | |
| KA Imaging | Ontario |
| KA Social Media | Nova Scotia |
| Kaatt's Media Design | Ontario |
| Kabam, Inc. | British Columbia |
| Kaboom | Quebec |
| Kaboom Tech | |
| KABS Laboratories, Inc. | |
| KADAK Products Ltd | British Columbia |
| Kafkaffen Advisory, Inc. | |
| Kai Design | Quebec |
| Kailash Soft | |
| Kaira Technologies | |
| Kairos Global, Inc. | Quebec |
| Kakadu Media | |
| Kaleidos Multimedia | Quebec |
| Kalibur Solutions | Ontario |
| Kalida | |
| Kaliop Canada | Quebec |
| Kalkul Technology Group | |
| Kallo, Inc. | |
| Kaloom, Inc. | Quebec |
| Kalware Microsystems, Inc. | Ontario |
| Kama.ai | |