| Member | Type | Country |
|---|---|---|
| Jiaco Instruments B.V. | A-Member | Netherlands |
| Johannes Kepler University Linz | B-Member | Austria |
| Johnson Controls International (Tyco Ireland Ltd) | C-Member II | Ireland |
| Jotne EPM Technology AS | A-Member | Norway |
| Jozef Stefan Institute | B-Member | Slovenia |
| Knowledge Centric Solutions S.L. | A-Member | Spain |
| Kumori Systems S.L. | A-Member | Spain |
| Kungliga Tekniska Hoegskolan | B-Member | Sweden |
| Lange Research Aircraft GmbH | A-Member | Germany |
| Lapland University of Applied Sciences | B-Member | Finland |
| Laser Imaging Systems GmbH | C-Member I | Germany |
| Latvijas Universitates Matematikas un Informatikas Instituts | B-Member | Latvia |
| Leonardo S.p.A | C-Member II | Italy |
| LESPROJEKT-SLUŽBY s.r.o. | A-Member | Czech Republic |
| LieberLieber Software GmbH | A-Member | Austria |