| Abbreviation | Definition |
|---|---|
| CJ | Cheil Jedang |
| CJ | Club Java |
| CJA | California Jewelers Association |
| CJB | Crossley Jamieson Brayley |
| CJI | Community Justice Inc |
| CJL | Carrick Jewellery Ltd |
| CJSC | closed joint stock company |
| CJY | Cave de Jean-Yves |
| CK | Chung Kong Plastic Works company |
| CK | Coaster Kingdom |
| CK | Country Kitchen |
| CKA | Castellaw Kom Architects |
| CKB | Corporation des Karabins de Bicêtre (French medical student association) |
| CKC | Cary Kopczynski Company |
| CKCA | Central Kentucky Counseling Association |
| CKCC | Cap Kuda Coffee Company |
| CKDC | Chloe Kastner Dance Company |
| CKDC | Consuming Kinetics Dance Company |
| CKF | Columbia Kootenay Fisheries |
| CKFRP | Columbia Kootenay Fisheries Renewal Partnership |