- ACT Operations Research
- AGH University of Science and Technology [Krakow, PL]
- AGILEA S.A.S.
- AMG Technology Ltd.
- ATB - Institut für angewandte Systemtechnik Bremen
- AVL List GmbH
- Aalborg University [Denmark]
- Aalto University
- Aarhus University [Aarhus]
- Addis Ababa University
- Advanced Technology Systems
- Adventure Research [Warnsveld]
- Agenor-I
- Agenzia Lucana di Sviluppo e di Innovazione in Agricoltura
- Aghetera Sas
- AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement
- Ainia centro tecnológico Valencia
- Airbus Defence and Space [Taufkirchen]
- Airbus [France]
- Airbus [United Kingdom]
- Aix Marseille Université
- Amirkabir University of Technology
- Ampère
- Ampère, Département Méthodes pour l'Ingénierie des Systèmes
- Amsterdam University of Applied Sciences
- Anhalt University of Applied Sciences
- Antecs S.r.l.
- Approches Littéraires, Linguistiques et Historiques des Sources
- Arcelik A.S
- Argumentation, Décision, Raisonnement, Incertitude et Apprentissage
- Aristotle University of Thessaloniki
- Armengaud Innovate GmbH
- Arts et Métiers Paristech ENSAM Aix-en-Provence
- Arts et Métiers Sciences et Technologies
- Assistant Professor Civil Engineering Faculty
- Assystem France
- Aston University [Birmingham]
- Athens Technology Center S.A. [Athènes]
- Athens University of Economics and Business
- Attica Wealth Management
- Auburn University
- Austrian Institute of Technology [Vienna]
- Axia Value Chain [São Paulo]
- Azad University, Science and Research Branch
- Azienda Sanitaria Locale [ROMA]
- Åbo Akademi University [Turku]