| Alliance Technologies | Ontario |
| Alliance Technology Associates, Inc. | Ontario |
| Alliance Webaxis | Quebec |
| Allied Venture Partners | |
| Alliex Technology | |
| Alligato, Inc. | British Columbia |
| ALLMYTE | |
| allnBlue | Quebec |
| Allnorth Consultants Ltd | |
| Allo Alarme | |
| Allocadia | British Columbia |
| Allocadia Software, Inc. | |
| Alloy Insights, Inc. | Ontario |
| Allsite IT | British Columbia |
| Allstar Tech | Saskatchewan |
| Allstream Business, Inc. | Ontario |
| Allumiqs | Nova Scotia |
| ALLUNAC | |
| Allway Technologies, Inc. | British Columbia |
| Allwebco Design | Ontario |
| Allyant | |
| Almaho, Inc. | |
| ALMEX Ltd | Ontario |
| Aloeroot Web Services | Ontario |
| Alongside | |
| Alooki | |
| Alora | |
| ALP Microsystèmes | Quebec |
| ALPHA | |
| Alpha Cancer Technologies, Inc. | Ontario |
| Alpha Dog Games | Nova Scotia |
| Alpha Intercom | Quebec |
| Alpha Networking | Ontario |
| Alpha Technologies Ltd | British Columbia |
| Alpha Technologies, Inc. | Manitoba |
| Alpha Telecom Services, Inc. | Ontario |
| Alpha TSi | Quebec |
| Alpha-9 Oncology, Inc. | |
| Alpha-9 Theranostics, Inc. | |
| ALPHA-EL, Inc. | |
| Alpha51, Inc. | Ontario |
| Alphabet | |
| AlphaBlock Technologies, Inc. | |
| Alphacâble | Quebec |
| Alphacasting, Inc. | |
| AlphaCognition | |
| AlphaIT | |
| AlphaKOR Group | Ontario |
| AlphaLayer, Inc. | |
| AlphaPay | |