| Acronym | Definition |
|---|
| CNSA | China National Space Administration |
| CNSA | California Nursing Students' Association |
| CNSA | Canadian National Shuffleboard Association |
| CNSA | Canadian Nursing Students' Association |
| CNSA | Council of Nova Scotia Archives (Canada) |
| CNSA | Cancer Nurses Society of Australia |
| CNSA | China National School of Administration |
| CNSA | Certified Network Security Administrator |
| CNSA | Contact Network of Spam Authorities |
| CNSA | Certified Notary Signing Agent |
| CNSA | Comhairle nan Sgoiltean Araich (Gaelic pre-school council) |
| CNSA | Caisse Nationale de Solidarité Autonomie |
| CNSA | California-Nevada Snowmobile Association |
| CNSA | Chambre Nationale des Services d'Ambulances |
| CNSA | Coordinamento Nazionale Servizi Affidi (Italy) |
| CNSA | Comité National de Sécurité Alimentaire |
| CNSA | Carolina Neurosurgery & Spine Associates (North Charlotte, NC) |
| CNSA | Colégio Nossa Senhora Auxiliadora |
| CNSA | Center for the Neurobehavioral Study of Alcohol (Wake Forest University School of Medicine) |
| CNSA | Centro Nazionale per il Salvataggio d'Arto |
| CNSA | Centre for Newfoundland Studies Archives |
| CNSA | Catholic Newman Student Association |
| CNSA | Central Negros Shooters Association (Philippines) |
| CNSA | Cambrian Native Student Association |
| CNSA | Conférence Nationale de Sensibilisation à l'Agriculture |
| CNSA | Council of New Student Advisors |
| CNSA | Czech National Security Authority |
| CNSA | Caring Nannies of San Antonio (San Antonio, TX) |
| CNSA | Citadel Navy Student Association |
| CNSA | City of Norwich School Association (UK) |
| CNSA | Collin Nursing Student Association |
| CNSA | Cercle Nautique des Sauveteurs Amiénois |
| CNSA | Cumberland Nepean Softball Association Inc. |
| CNSA | Cardinal Newman Student Association |
| CNSA | Canadian National Sportfishing Association |
| CNSA | Catalina 22 National Sailing Association |
| CNSA | Centre National des Semences d’Arbres |
| CNSA | Comitato Nazionale della Sperimentazione Agraria (Italy) |
| CNSA | Christian Network South Africa |
| CNSA | Car Shop Nine Study Area |
| CNSA | Citizen's National Security Agency |
| CNSA | Catalase-Negative Staphylococcus Aureus |
| CNSA | Consortium for Navigation Support and Analysis (Marshall University, Huntington, WV) |
| CNSA | Computer Network and System Administration (various schools) |
| CNSA | Certified Nigerian Scam Artist (spam) |