Marken in Siegen
- C & A Mode (1)
- Cafe & Bar Celona (1)
- Cafe del Sol (1)
- Cafe Extrablatt (1)
- CAMP DAVID | SOCCX (1)
- CARGLASS (1)
- Caritas (4)
- Carolin Vanity Mode (1)
- CASAMODA Heinrich Katt (1)
- CECIL (5)
- CHRIST Juweliere (3)
- CineStar (1)
- CJD Christliches Jugenddorfwerk Deutschlands (1)
- Classic Oil (1)
- Clever Fit Fitnessstudio (1)
- COMCAVE.COLLEGE (1)
- compustore (1)
- Continentale Versicherungsverbund (1)
- Contipark (2)
- Cosmo Hairshop (1)
- CRIFBÜRGEL (1)