| Alentis Therapeutics AG | |
| Aleph Zero Foundation | |
| Aleva Neurotherapeutics S.A. | |
| Alithea Genomics | |
| AliveDx | |
| All Consulting AG | St. Gallen |
| Allasso S.A. | |
| Alleszwäg | |
| Allgeier (Schweiz) AG | Zurich |
| AlloPC | Valais |
| ALLPS GmbH | |
| Alltron AG | |
| Almatech | |
| Almer Technologies AG | |
| Alos Solution AG | |
| Alpana Ventures | |
| Alpha&randj.net | Vaud |
| Alphanet | Neuchâtel |
| AlpHosting | Neuchâtel |
| Alpian S.A. | |
| Alpine Business Incubator for Space Tech Startups | |
| Alpinum Solutions | |
| AlpSoft S.A. | Valais |
| Alsoft Informatk AG | Grisons |
| Altamira Therapeutics AG | |
| AlternativeSoft | Zurich |
| Altreda AG | Zurich |
| Altus Impact | |
| AlveoliX AG | |
| Amacker & Partner Informatik AG | Zurich |
| Amal Therapeutics S.A. | |
| Amaris Consulting | |
| Amazee Labs AG | |
| Amazee.io | |
| Amazentis S.A. | |
| Amazing Marvin | |
| Ambit Group AG | Zurich |
| Amétiq GmbH | Schwyz |
| AMIV Bastli | |
| Amrein Engineering AG | Aargau |
| Amstutz Trainings GmbH | Zug |
| AMYRA Biotech AG | |
| Anaconsol GmbH | Zurich |
| AnaSys AG | Zurich |
| Anaveon AG | |
| Andreas Imhof Imhof EDV-Dienstleistungen | Bern |
| Andy Kunz Grafikdesign | Aargau |
| Anivo 360 AG | |
| Anjarium Biosciences AG | |
| Annanow Group AG | |