Marken in Erfurt
- C & A Mode (2)
- Cafe del Sol (1)
- Calzedonia (1)
- camel active (1)
- CAMP DAVID | SOCCX (4)
- Capgemini (1)
- CARGLASS (1)
- Caritas (8)
- CASAMODA Heinrich Katt (2)
- Caverion (2)
- CECIL (8)
- chillhouse Headshop (2)
- CHRIST Juweliere (2)
- Christmann & Pfeifer (1)
- CineStar (1)
- City Clean (1)
- CJD Christliches Jugenddorfwerk Deutschlands (11)
- Claire's (1)
- CleanCar (1)
- clip film- u. fernsehproduktion (1)
- Coffee-Fellows (1)
- Colloseum Mode (1)
- com4you (2)
- COMCAVE.COLLEGE (1)
- COMMERZBANK (3)
- Computacenter (1)
- Concordia Versicherung (1)
- CONTIGO Fairtrade (1)
- Contipark (3)
- CSC Business Solutions (1)
- Cut and Colors (2)