| # | Company name | Role | # of projects |
|---|---|---|---|
| 1 | Abacus Lighting Ltd. | Light engineering | 1 |
| 2 | ÅF Hansen & Henneberg | Light engineering | 1 |
| 3 | AG Licht Gesellschaft beratender Ingenieure für Lichtplanung | Light engineering | 14 |
| 4 | Alios, LLC | Light engineering | 3 |
| 5 | Andromeda International SRL | Light engineering | 0 |
| 6 | Ann Kale Associates | Light engineering | 2 |
| 7 | Archillume Lighting Design, Inc. | Light engineering | 2 |
| 8 | Art Light Design Consultants,Inc. | Light engineering | 1 |
| 9 | artec3 | Light engineering | 2 |
| 10 | Arup Lighting | Light engineering | 16 |
| 11 | Asaf Ben Asher | Light engineering | 11 |
| 12 | Atelier für Kunst und Technik GmbH | Light engineering | 1 |
| 13 | Atomis Architectural Lighting | Light engineering | 3 |
| 14 | Auerbach Pollock Friedlander | Light engineering | 5 |
| 15 | Austin Collaborative Venture | Light engineering | 1 |
| 16 | AWA Lighting Designers | Light engineering | 3 |
| 17 | Baron Sign Manufacturing | Light engineering | 13 |
| 18 | Bartenbach Licht Labor Ges. mbH | Light engineering | 14 |
| 19 | Be Lit Company Limited | Light engineering | 1 |
| 20 | Belzner Holmes | Light engineering | 1 |