- Canvas React Plus
- Canvas Select Plus
- Cardas Audio
- Cardina
- CARE PRO
- CARESTAR
- Carot One
- Carton
- CASE MATE
- CASE SCENARIO
- Caseking
- CASEPHOLIC
- CASETiFY
- Casselini
- Casserolle
- Cassette Car Products
- CASUAL＋
- catalyst（スマホ）
- Cateck
- Cater-pillar
- CATEYE
- CATTRE
- CAV
- Caviar
- CAVOSMART
- CAVジャパン
- CAXA UP
- CB2
- CBジャパン
- CBジャパン カントゥール
- CCP
- CCP BONABONA
- CCP SWEEPLUS
- cdm
- CEC
- CECIL McBEE
- CELESTRON
- CELESTRON Advanced VX
- CELESTRON AstroMaster
- CELESTRON NexStar