| Askuity | Ontario |
| ASL Consulting a division of ASL Enterprises, Inc. | Ontario |
| Aslan Computer Systems | Alberta |
| ASM Informatique, Inc. | Quebec |
| ASP Hosting | Ontario |
| Aspect Biosystems Ltd | |
| Assaynet, Inc. | Ontario |
| Assek Technologies | |
| Assembly Technologies, Inc. | British Columbia |
| Assent Compliance, Inc. | Ontario |
| Assent, Inc. | |
| Asset Business Consulting | British Columbia |
| Assetsoft | |
| ASSIA AI | |
| Assiniboine Community College | |
| Assiniboine Credit Union | |
| Assiniboine Credit Union | |
| Assister Technology Ltd | |
| AssKickin Solutions, Inc. | Ontario |
| Association de l'industrie électrique du Québec | Quebec |
| Association des collèges et universités de la francophonie canadienne | Ontario |
| Association des manufacturiers en électronique de Québec | Quebec |
| Association des redistributeurs d’électricité du Québec | Quebec |
| Association des Véhicules Électriques du Québec | |
| Association Edteq | Quebec |
| Association for Computer Technology in Alberta | |
| Association Management Solutions & Memlink, Inc. | British Columbia |
| Association of Atlantic Universities | Nova Scotia |
| Association of Canada Lands Surveyors | Ontario |
| Association of Canadian Ergonomists | Alberta |
| Association of Professional Computer Consultants | Ontario |
| Association pour le développement de la recherche et de l'innovation du Québec | Quebec |
| Association québécoise des informaticiennes et informaticiens indépendants | Quebec |
| Association québécoise des technologies | Quebec |
| Association québécoise des transports | Quebec |
| Association sur l'accès et la protection de l'information | Quebec |
| Assumption University | Ontario |
| Assured Software | British Columbia |
| Astatic Solutions | British Columbia |
| Astec Components Ltd | Ontario |
| Astley Gilbert | Ontario |
| Astra Campground Manager | Ontario |
| Astral Internet | Quebec |
| Astral Sécurité | Quebec |
| Astral Solutions Group | Ontario |
| AstraQom | Ontario |
| Astro-Tech System Solutions | Ontario |
| AstroCom Associates, Inc. | Ontario |
| Astrolabe Interactive | Quebec |
| Astropof, Inc. | Quebec |