| Acronym | Definition |
|---|
| CNB | Commonwealth National Bank (Alabama) |
| CNB | Ceska Narodni Banka (Czech: Czech National Bank) |
| CNB | Czech National Bank |
| CNB | Centro Nacional de Biotecnologia (Spanish: Center for Biotechnology; Madrid, Spain) |
| CNB | City National Bank |
| CNB | Citizens National Bank |
| CNB | Currículo Nacional Base (Spanish: Base National Curriculum; Guatemala) |
| CNB | Construction Navale Bordeaux (French: Bordeaux Shipbuilding; Bordeaux, France) |
| CNB | Club National des Bécassiers (French: National Woodcock Club) |
| CNB | Conseil National du Bruit (French: National Council of Noise) |
| CNB | Croatian National Bank |
| CNB | Commission Nationale des Bourses (French: National Commission for Scholarships) |
| CNB | Cercle des Naturalistes de Belgique (French: Belgium Naturalists Circle; Belgium) |
| CNB | Corresponsales No Bancarios (Spanish, Colombia) |
| CNB | Centre Nautique de Bourgogne (French sailing center) |
| CNB | Chloronitrobenzene |
| CNB | Country Natural Beef |
| CNB | Cayman National Bank |
| CNB | Club Nautique de Bouchemaine (French water sports club) |
| CNB | Club Naturiste de Besançon (French: Besançon Naturist Club; Besançon, France) |
| CNB | Cercle Nautique des Bordes (French diving club) |
| CNB | Comité National de Biophysique (French: National Committee for Biophysics) |
| CNB | Cumulonimbus (clouds) |
| CNB | City News Bureau (Chicago, Illinois) |
| CNB | Central Narcotics Bureau, Singapore |
| CNB | Colégio Notarial do Brasil - Conselho Federal (Brazil) |
| CNB | Central Neuraxial Blockade (anesthesia) |
| CNB | Centre National des Biologistes |
| CNB | Chevron Notch Beam |
| CNB | Code Name Base |
| CNB | Chemical, Nuclear, Biological (weapons) |
| CNB | Core Network Bicasting |
| CNB | Carrier Network Business (3Com) |
| CNB | Charmaine Neville Band (New Orleans, LA) |