C výrobci:
- C-Tech
- C&K
- Cadelec
- callas
- Camelion
- Canmore
- Canon
- Canyon
- Carl Zeiss
- Casablanca
- Case Logic
- Casetek
- Casio
- CD Projekt
- Certance
- CFI
- Cinemax
- CipherLab
- Cirque
- CISCO
- Clatronic
- ClickTronic
- Club 3D
- CM-TECH
- Codegen
- ColorsIT
- Comag
- Compad
- Compal
- Compaq
- Compex
- Compline
- Compro
- Compucase
- CompuCity
- Computer Associates
- Computer Press
- Connect3D
- Consulta
- Conteg
- Contex
- CoolerMaster
- Coolink
- Core
- Corel
- Corepad
- Corsair
- COWON Systems
- Creative Labs
- Creative Light
- Crocodile
- Crono
- Crumpler
- Crystal Decisions
- CSX
- Cyber Case
- Cyber Clean
- Cyber Power
- Cyberbajt
- CyberHOME
- CyberLink
- Cyberoam
- Cyco
- Chaintech Computer
- Chenbro
- Cherry
- Chic Technology
- Chicony
- Chieftec
- Chronos