| Claire Sturzenegger-Jeanfavre Stiftung | Basel | 20.9.2025 |
| Clairvaux Capital AG | Basel | 20.9.2025 |
| Clara Heimtierbedarf GmbH | Basel | 20.9.2025 |
| Clara Point Enescu | Basel | 20.9.2025 |
| Clara's Tabak Shop Kesik | Basel | 20.9.2025 |
| Claradent GmbH | Basel | 20.9.2025 |
| Clariant Foundation | Basel | 20.9.2025 |
| Clariga AG | Basel | 20.9.2025 |
| Clarius SA | Basel | 20.9.2025 |
| Clarunis AG | Basel | 20.9.2025 |
| Classen Haustechnik | Basel | 20.9.2025 |
| Clauberg Yachting GmbH | Basel | 20.9.2025 |
| Claude Birchler Management & Consulting | Basel | 20.9.2025 |
| Claude Kuhn Ingenieur AG | Basel | 20.9.2025 |
| Claude Meury Immobilien GmbH | Basel | 20.9.2025 |
| Claudia Fink - Ergotherapie für psychische Gesundheit | Riehen | 20.9.2025 |
| Claudia Grieder Immobilienvermittlung | Basel | 20.9.2025 |
| Claudia Güdel GmbH | Basel | 20.9.2025 |
| Claudia Wirz, Buchhaltungsservice | Bettingen | 20.9.2025 |
| Claudiabasel GmbH | Basel | 20.9.2025 |
| Claudine Mollinet | Basel | 20.9.2025 |
| Claudine und Hans-Heiner Zaeslin-Bustany-Stiftung | Basel | 20.9.2025 |
| Clauss Kahl Merz Atelier für Architektur + Städtebau GmbH | Basel | 20.9.2025 |
| Claviant GmbH | Basel | 20.9.2025 |
| CLAVIS klw AG | Basel | 20.9.2025 |
| Claym Kommunikation GmbH | Basel | 20.9.2025 |
| Clean & Clear Reinigung KLG | Basel | 20.9.2025 |
| Clean Energy Infrastructure Switzerland 3 GP AG | Basel | 20.9.2025 |
| Clean Energy Infrastructure Switzerland 3 KmGK | Basel | 20.9.2025 |
| CLEAN PERFEKT FERNANDES PEREIRA | Riehen | 20.9.2025 |
| Clean Reinigung GmbH | Basel | 20.9.2025 |
| Clean Reinigung, Behije Zulbeari | Basel | 20.9.2025 |
| clean-tek Holding AG | Basel | 20.9.2025 |
| clean-tek Reinraum und Hospitaltechnik AG | Basel | 20.9.2025 |
| CleanBau Basel GmbH | Basel | 20.9.2025 |
| Cleanroom Future AG | Basel | 20.9.2025 |
| Clear Minds Investment AG | Basel | 20.9.2025 |
| Clear Solutions Laboratories AG | Basel | 20.9.2025 |
| Clearance Ventures AG | Basel | 20.9.2025 |
| CLEEVEN He AG | Basel | 20.9.2025 |
| Cleeven He IT AG | Basel | 20.9.2025 |
| Clément Fossez - Game Developer | Basel | 20.9.2025 |
| Clementine's GmbH | Basel | 20.9.2025 |
| Clemessy (Switzerland) AG | Basel | 20.9.2025 |
| Cleopatra Beauty House Serçe | Basel | 20.9.2025 |
| Clestra Hauserman Overseas Contracting-CHOC AG | Basel | 20.9.2025 |
| Clever.Care AG | Basel | 20.9.2025 |
| CLHT Planungsbüro GmbH | Basel | 20.9.2025 |
| Client Focus GmbH | Basel | 20.9.2025 |
| Clinerion AG | Basel | 20.9.2025 |
| Clinical Data Science GmbH | Basel | 20.9.2025 |
| Clips Sue Burckhardt | Basel | 20.9.2025 |
| Cloak GmbH | Basel | 20.9.2025 |
| Close Protection Team Chong | Basel | 20.9.2025 |
| Clotho Invest AG | Basel | 20.9.2025 |
| Cloud 9 Classical Coaching by Schöni | Basel | 20.9.2025 |
| Cloud Clean GmbH | Basel | 20.9.2025 |
| CloudFactory GmbH | Basel | 20.9.2025 |
| Clover Coaching AG | Basel | 20.9.2025 |
| Club 65 GmbH | Basel | 20.9.2025 |
| Club Chapiteau | Basel | 20.9.2025 |
| Club de Bâle SA | Basel | 20.9.2025 |
| Club Grand Hôtel & Palace J.-U. Gubser | Basel | 20.9.2025 |