| Brazilian Council of Ophthalmology | Academic & Science |
| Conselho Brasileiro de Oftalmologia | Academic & Science |
| Campus Budget Office | Academic & Science |
| College Bound Opportunities | Academic & Science |
| Collateralized Bond Obligation | Accounts and Finance |
| Congressional Budget Office | Accounts and Finance |
| Cotabato | Airport Code |
| Cash Back Offer | Banking |
| Chase Capital VII, 7.00% Capital Securities, Series G | Business |
| Complex Business Organization | Business |
| Congress of Broadcast Organizations | Business |
| Current Back Order | Business |
| Central Business Office | Business |
| Cambria Bicycle Outfitter | Business |
| Computer Books Online | Business |
| Claymore 1 - 5 Year Laddered Corporate Bond Exchange Traded Fund | Business |
| Chief Brand Officer | Business |
| Central Bank of Oman | Business |
| Chief Business Office | Business |
| Cash Basis Only | Business |
| Certified Building Operator | Business |
| Certified Building Official | Business |
| Chief Business Officer | Business |
| Chief Banking Officer | Business |
| Carbon Black Oil | Chemistry |
| Count Basie Orchestra | Community |
| CasaBlanca Orchestra | Community |
| Chief Business Official | Community |
| Community Based Organisation | Community |
| Community Branch Of | Community |
| Community Based Organizations | Community |
| Conduction Band Offset | Community |
| Community Benefit Organization | Community |
| Community Benefits Ordinance | Community |
| Center for Business Optimization | Computing |
| Coupling Between Object Classes | Computing |
| Cost Based Optimizer | Computing |
| Computer Burst Order | Computing |
| Competency Based Online | Computing |
| Computer Based Options | Computing |
| Cloud Business Office | Computing |
| Clean Before Operating | Computing |
| Custom Business Object | Computing |
| Common Business Object | Computing |
| Chaddy Blow Out | General |
| Chunks Blown On | General |
| Country Backstop Officer | General |
| Cue Bogus Outrage | General |
| Cheddar Bacon and Onion | General |
| Cheddar Bacon Onion | General |
| Central Billing Office | General |
| Chicken Bacon Oignons | General |
| Conner Block Outcast | General |
| Chief Bridal Officer | General |
| Chicken Bacon Onion | General |
| Constructieve Benadering Overheidsopdrachten | General |
| Covertly Barack Obama | General |
| Curriculum Based Outcomes | General |
| Campaign Budget Optimization | General |
| City Budget Office | General |
| Cooked Books Organization | General |
| Chief Belief Officer | General |
| Chicken Bacon and Onion | General |
| Cell Behavior Ontology | General |
| Center for Biodiversity Outcomes | General |
| Campaign Budget Optimisation | General |
| Charge By Officer | General |
| Counter Blox Offensive | General |
| Cooked Books Office | General |
| Conservative Bullshit Obliterator | General |
| Commercial Bus Operator | General |
| Community Based Organization | Governmental |
| Central Badging Operations | Governmental |
| Community Beat Officer | Governmental |
| Combined Bomber Offensive | Governmental |
| Criminal Behaviour Order | Governmental |
| Chief Blogging Officer | Jobs |
| Control Board Operator | Jobs |
| Central Badging Office | Military and Defence |
| Commodity Business Operations | Military and Defence |
| Continuous Bitstream Oriented | Networking |
| Corrected Born-oppenheimer | Physics Related |
| Coherent Betatron Oscillations | Physics Related |
| Cross-band Operation | Radio Science |
| Call-back Only | Telecommunication |
| Cotabato Airport | Transport & Travel |