| Acronym | Definition |
|---|
| CN | Peoples' Republic of China (Top Level Domain abbreviation) |
| CN | Cartoon Network |
| CN | Canadian National Railway |
| CN | Common Name |
| CN | Connect (ITU-T) |
| CN | Consultant |
| CN | Core Network |
| CN | Connector |
| CN | Cyber Nations (web forum) |
| CN | Comoros |
| CN | Change Notice |
| CN | Communications Network |
| CN | Cyanide |
| CN | Copper Nickel (product feature) |
| CN | Cognitive Neuroscience |
| CN | Case Number |
| CN | Chuck Norris |
| CN | Canonical Name (computer domain name resolution) |
| CN | Certified Nurse |
| CN | Complete Nutrition |
| CN | Combined Nomenclature |
| CN | Cranial Nerve |
| CN | Company Number |
| CN | Comfortably Numb |
| CN | Channel Number |
| CN | Comfort Noise (telephony) |
| CN | Command Network |
| CN | Coordination Number (mathematics) |
| CN | Cellular Network |
| CN | Carbon Nanotube |
| CN | China Netcom (est. 1999) |
| CN | Corporate Network |
| CN | Chloroacetophenone |
| CN | Conselho Nacional (Portuguese: National Council; East Timor party) |
| CN | Convergence Numérique (French: Digital Convergence) |
| CN | Cuneo, Piemonte (Italian province) |
| CN | Cinéma Numérique (French: Digital Cinema) |
| CN | Condensation Nucleus |
| CN | Convergencia Nacional (Venezuelan Party) |
| CN | California Northern (railroad) |
| CN | Causal Nexus (gaming clan) |
| CN | Customer Network |
| CN | Credit Note |
| CN | Community Networking |
| CN | Contract Negotiation(s) |
| CN | Caudate Nucleus (neuroanatomy) |
| CN | Color Negative (film) |
| CN | Cellulose Nitrate |
| CN | Control Node |
| CN | Correspondent Node |
| CN | Chaotic Neutral (gaming) |
| CN | Counternarcotic (US DoD) |
| CN | Clinical Nutritionist |
| CN | Central Node |
| CN | Client Node |
| CN | Cluster Number |
| CN | Ciment Naturel (French: Natural Cement) |
| CN | Congenital Nystagmus |
| CN | Construction Number |
| CN | Congressional Notification |
| CN | Chief of Navy (Australia, New Zealand) |
| CN | Compass North |
| CN | Calculation Note |
| CN | Cavan, Ireland |
| CN | Construction Notice |
| CN | Constructionman (US Navy rating) |
| CN | Cinema Nation |
| CN | Consignes de Navigabilite (French aviation authority) |
| CN | Clueless Newbie |
| CN | Cherokee Nations |
| CN | Cononical |
| CN | Cure Notice |
| CN | Carrienews.com (Carrie Underwood fan site) |
| CN | Ciudad de Nápoles (Guatemala hospital) |
| CN | CreatioNation (convergent media company promoting the arts and altruism) |
| CN | Coloracion Normal (Spanish: Normally Colored) |
| CN | Cooperativa Jesús Nazareno Ltda. (Santa Cruz, Bolivia) |
| CN | Carpal Narrowing |
| CN | Casnicki Namjesnik (Croatian: Warrant Officer) |
| CN | Cras Noc'te (Tomorrow Night) |