| Animikii Indigenous Technology | British Columbia |
| Anjali International | Ontario |
| Ankit Designs | Ontario |
| Ankit Designs, Inc. | |
| Anna Tulchinsky Website Marketing Consultancy | Ontario |
| Anne Verge Creative | Nova Scotia |
| Annex Media Marketing, Inc. | Ontario |
| Anney Ha | |
| Annie Bergeron - Conseillère Web | Quebec |
| Anno Internet | British Columbia |
| Anogen-Yes Biotech Laboratories Ltd | |
| Anomera, Inc. | |
| Anoosh Tech Corporation | Ontario |
| ANP Solutions | Quebec |
| Anstice | |
| AnswerBar | |
| Answermen Ltd | Ontario |
| AnswerNet Canada | |
| Antelope, Inc. | |
| Anthem | Ontario |
| Anthony Macauley Associates | British Columbia |
| Anthony Maley | British Columbia |
| Antibex Software | Ontario |
| Antidote | Quebec |
| Antimatter Creative Labs | |
| Antonio Cangiano | Ontario |
| AntoXa Corporation | |
| Antradar | Ontario |
| ANTSAND | |
| ANTVibes, Inc. | Ontario |
| Anvil Integrated Solutions, Inc. | Ontario |
| Anvil+Shock | Ontario |
| Anyday, Inc. | |
| Anyload Transducer Co., Ltd | British Columbia |
| Anyon Systems, Inc. | |
| Anyplace Control | British Columbia |
| Anytrek | |
| AnyWare Group | New Brunswick |
| Anzer IT Healthcare | Ontario |
| AOR Web Solutions | Prince Edward Island |
| AOT Technologies | |
| AP1 | Ontario |
| Apad Canada | Ontario |
| Aparat | |
| APATCO Technologies | Ontario |
| Apax Systems, Inc. | Ontario |
| APC Doctor | |
| apcurium | Quebec |
| Ape Thinker | Quebec |
| APEC Technologies | |