| BenevolentAI | Luxembourg |
| Birdee | |
| Black Manta Capital Partners S.à.r.l. | |
| Blockchain Luxembourg S.A.R.L. | Luxembourg |
| Blue Horizon S.a.r.l. | |
| BMS Engineering | Esch-sur-Alzette |
| BNP Paribas Luxembourg | |
| BOA Group S.A. | |
| Boson Energy S.A. | |
| Bradesco Europa S.A. | |
| Business Concept & Solutions S.A. | Remich |
| BWM Mediasoft | Luxembourg |
| C. Concept S.à.r.l. | Capellen |
| Castik Capital S.à.r.l. | Luxembourg |
| CBC Informatique Bascharage | Capellen |
| Cegecom | Luxembourg |
| Cellon S.A. | |
| CERATIZIT S.A. | |
| Cesa Alliance | Luxembourg |
| Chaos Computer Club Lëtzebuerg | Luxembourg |
| Cipio Partners S.à.r.l. | Luxembourg |
| CIRCL | |
| Circu Li-ion S.A. | |
| Circuit Foil | |
| Clear Image AI S.à r.l. | |
| Cluster Maritime Luxembourg | |
| CoderDojo | |
| Cogito Capital Partners | Luxembourg |
| Commission de Surveillance du Secteur Financier, Luxembourg | |
| Commission nationale pour la protection des données Grand-Duché du Luxembourg | Esch-sur-Alzette |
| ComptaOne | Esch-sur-Alzette |
| Computer Home | Luxembourg |
| Computer Team S.à.r.l. | Luxembourg |
| Concept Factory | |
| ConnectCom S.à.r.l. | Esch-sur-Alzette |
| Conostix S.A. | Capellen |
| Creos Luxembourg S.A. | |
| CRI Group S.A. | Luxembourg |
| Crosscard | |
| Cube 4T8 | Esch-sur-Alzette |
| Cybercultus S.A. | |
| Cyberworld Awareness and Security Enhancement Services | Luxembourg |
| Danieli Finance Solutions S.A. | |
| dartalis | Luxembourg |
| Databourg Systems | Luxembourg |
| Datacenter Luxembourg S.A. | Esch-sur-Alzette |
| DATAGATE (Luxembourg) S.A. | Luxembourg |
| DataThings | |
| DBiT | Capellen |
| DealDrive | |