| Center for Nanoscale Systems | Academic & Science |
| Cognitive Neuroscience Society | Academic & Science |
| Société nucléaire canadienne | Academic & Science |
| Canadian Nuclear Society | Academic & Science |
| Zhōngguó Hé Xuéhuì | Academic & Science |
| Chinese Nuclear Society | Academic & Science |
| Zhōngguó Yíngyǎng Xuéhuì | Academic & Science |
| 中国营养学会 | Academic & Science |
| Chinese Nutrition Society | Academic & Science |
| Consolidated Nuclear Security | Academic & Science |
| Center For Nanotechnology In Society | Academic & Science |
| Continue Next Semester | Academic & Science |
| Center for Neural Science | Academic & Science |
| Central Navigation System | Academic & Science |
| Cairns | Airport Code |
| Computing Network Services | Business |
| Consolidated Stores Corporation | Business |
| Cincinnati Neurology and Spine | Business |
| Cohensive Non Swelling | Business |
| Centius Gold Limited | Business |
| Can Not See | Chemistry |
| Community Nursing Services | Community |
| Catholic News Service | Community |
| Corporation for National Service | Community |
| Conservative News Service | Community |
| Christina News Source | Community |
| Cybercast News Service | Community |
| Cartoon Network Star | Community |
| Computer Networking Symposium | Community |
| Communications and Network Security | Computing |
| Cornerian Naval Ship | Computing |
| Computer Network Services | Computing |
| Computer and Network Security | Computing |
| Complementary Network Service | Computing |
| Converged Network Services | Computing |
| Call Name Service | Computing |
| Cisco Network Security | Computing |
| Computer Network Specialist | Computing |
| Color Naming System | Computing |
| Caching Name Server | Computing |
| Communication and Network Services | Computing |
| Compuserve Network Services | Computing |
| Computer Network Support | Computing |
| Cisco Networking Services | Computing |
| Corporate Network Solutions | Computing |
| Covenant Not to Sue | Computing |
| Citrix Netscaler | Computing |
| Centro Nacional de Supercomputacion | Computing |
| Community Network Services | Computing |
| Communications Network Simulator | Computing |
| Certified Novell Specialist | Computing |
| Cluster Network Server | Computing |
| Computer and Network Systems | Computing |
| Centric Swap | Cryptocurrency |
| College of Natural Sciences | Educational Institute |
| Crystallography and NMR System | General |
| Click N Ship | General |
| Center for Nonproliferation Studies | General |
| Centre for Neuro Skills | General |
| Center For Networked Systems | General |
| Commercial Network Services | General |
| Cargo Network Services | General |
| Cicero North Syracuse | General |
| Category Number System | General |
| Central Network Service | General |
| Client Needs System | General |
| Charlie N Sane | General |
| Central Nervous Stke | General |
| Capitalism Nature Socialism | General |
| Cheney News Service | General |
| Cooperative Network Services | General |
| Citizen Notification System | General |
| Child Nutrition Services | General |
| Chicken Noodle Soup | General |
| Center for Neuro Skills | General |
| Communication and Navigation System | General |
| Car Navigation System | General |
| Colorado National Speedway | General |
| Combustion Noise Sensor | General |
| Cadillac Northstar | General |
| Contact Set | General |
| Connected Navigation System | General |
| Club Nissan Sentra | General |
| Century Special | General |
| Communications, Navigation and Surveillance | Governmental |
| Chinese National Standard | Governmental |
| Congress of Neurological Surgeons | Governmental |
| CHUCHURA | Indian Railway Station |
| Central Nacional Sindical | International |
| Certified Novell Salesperson | Jobs |
| Clinical Nurse Specialist | Jobs |
| Constrained Non-linear System | Maths |
| Central Nervous System | Medical |
| Crystallographic and NMR (Nuclear Magnetic Resonance) System | Medical |
| Coagulase Negative Staphylococcus | Medical |
| Cardiovascular Nervous System | Medical |
| Certified Nutrition Specialist | Medical |
| Child Neurology Society | Medical |
| Crigler-Najjar Syndrome | Medical |
| Community Nursing Service | Medical |
| Congenital Nephrotic Syndrome | Medical |
| Cutaneous Nerve Stimulation | Medical |
| Computing and Network Services | Networking |
| Chief of the Naval Staff | Regional |
| Cairns, Queensland, Australia | Regional |
| Coalition Nationale sur les Sentiers | Sports |
| Coalition Nationale Sur Les Sentiers (canada) | Sports |
| Continuous Net Settlement | Stock Exchange |
