- CAB - CAMBRIDGE
- Cambridge Audio - Canon
- Canopia by Palram - CARREFOUR
- Carrefour Home - Caterpillar
- Caterpillar Série - Chacon
- Chaffoteaux - Cherry Aerospace
- Chevrolet - CITROEN
- Clarion - Clifford
- Climadiff - CombiSteel
- Comet Labs - Conrad energy
- CONSTRUCTA - Cornelius
- Corning - Crem Coffee
- Crest Audio - Curtiss
- CyberLink - Cyrus