CSN
- COP9 signalosome
- COP9 signalosome complex subunit 3
- CSN (album)
- CSN (box set)
- CSN International
- CSN Stores
- CSN.1
- CSN2
- Canaan Smith-Njigba
- Carlton Sports Network
- Cell Signaling Networks
- Centrala Studiestödsnämnden
- Chalisgaon Junction railway station
- Changsha South railway station
- Chessington North railway station
- China Southern Airlines
- College of Southern Nevada
- Coláiste an Spioraid Naoimh
- Comic Shop News
- Companhia Siderúrgica Nacional
- Comunidad Sudamericana de Naciones
- Confederate States Navy
- Confédération des syndicats nationaux
- Czech technical standard
- NBC Sports Regional Networks
- WCSN-LD