| Acronym | Definition |
|---|
| RCB | Royal Challengers Bangalore (Indian cricket team) |
| RCB | Robinson College of Business |
| RCB | Right Cornerback (football) |
| RCB | Reinforced Concrete Box |
| RCB | Representative Church Body (Church of Ireland) |
| RCB | Registered Certification Body |
| RCB | Regular Commissions Board (UK) |
| RCB | Residual Cancer Burden (clinical cancer care) |
| RCB | Regional Certifying Body (Australia immigration) |
| RCB | River City Beemers (California) |
| RCB | Reims Champagne Basket (French basketball organization) |
| RCB | Registry of Companies & Businesses (Republic of Singapore) |
| RCB | Red Carnation Ball (Tau Kappa Epsilon's annual formal) |
| RCB | Reactor Containment Building |
| RCB | Rapid Containment Baton (Peacekeeper Products International) |
| RCB | Richards Bay, South Africa - Richards Bay (Airport Code) |
| RCB | Rogers County Bank |
| RCB | Reverse Convertible Bond |
| RCB | Robust Capon Beamformer |
| RCB | Residual Current Breaker |
| RCB | Radio Cité Bretagne (French: Radio City Britain; radio station) |
| RCB | Robert Cray Band |
| RCB | Repulsive Coulomb Barrier (spectroscopy) |
| RCB | Receive Control Block |
| RCB | Requirements Control Board |
| RCB | Random Coding Bound |
| RCB | Robbinsdale City Band (Robbinsdale, MN) |
| RCB | Rivers Cuomo Band |
| RCB | Requirements Change Board |
| RCB | Rivers Correspondence Board |
| RCB | Raquettes Club de Ballan (French sports club) |
| RCB | Retrieval Containment Building |
| RCB | Regional Co-ordination Bureau |
| RCB | River City Band (Boston, MA) |
| RCB | Rail Car Coating Brokers |
| RCB | Ridgewood Concert Band (Ridgewood, NJ) |
| RCB | Rockville Concert Band (Rockville, MD) |
| RCB | Re-Configuration Buffer |
| RCB | Reverend Chedda Bob (gospel hip-hop artist) |
| RCB | Relay Control Box |
| RCB | Rock Creek Barrels, Inc |
| RCB | Range Control Building (military arms training) |
| RCB | Rose City Burial (band) |
| RCB | Rugby Club Baulois (French rugby club) |
| RCB | Raleigh Concert Band (Raleigh, NC) |
| RCB | Revere Copper and Brass, Inc (Canton, MA) |
| RCB | Rosyth Concert Band |
| RCB | Richmond Concert Band (Richmond, VA) |
| RCB | Remotely Controlled Boat |
| RCB | Rødovre Concert Band (Rødovre, Denmark) |
| RCB | Rugby Club de Ballancourt (French rugby club) |
| RCB | Richardson Community Band (Richardson, TX) |
| RCB | Rádio Comunidade do Boquim (Portuguese: Community Radio's Mouthpiece; Brazil) |
| RCB | Riverside Concert Band (Riverside, CA) |
| RCB | Richmond Community Bands |
| RCB | Reynoldsburg Community Band (Reynoldsburg, OH) |
| RCB | Raw Chipboard |
| RCB | Rubber Cove Base |
| RCB | Regional Centre in Bangkok (UN Development Programme) |
| RCB | Russian Commercial Bank (various locations) |
| RCB | River City Bicycles (Portland, OR) |
| RCB | Rossington Collins Band (est. 1979) |
| RCB | Regional Centre for Biotechnology (India) |
| RCB | Repairables Control Branch (US Marines) |
| RCB | Research Capacity Building (various organizations) |