| Regionally Dictated Colleges | Academic & Science |
| Redencao | Airport Code |
| Remote Deposit Capture | Banking |
| Radiation Detection Company | Business |
| Rowan Companies, Inc. | Business |
| Research and Development Corporation | Business |
| Resource Development Center | Business |
| Resonance Dampening Compound | Business |
| Retail Distribution Center | Business |
| Roxborough Development Corporation | Business |
| Residual Dipolar Coupling | Chemistry |
| Research Development Committee | Community |
| Regional Development Corporations | Community |
| Rat Discipline Committee | Community |
| Regional Development Company | Community |
| Riverfront Development Corporation | Community |
| Retired Directors Club | Community |
| Ride Development Company | Community |
| Railroad Development Corp | Community |
| Resource Development Council | Community |
| Research Development Center | Community |
| Regional Development Council | Community |
| Remote Device Control | Computer and Networking |
| Remote Data Collector | Computer Hardware |
| Remote Desktop Client | Computing |
| Remote Data Collection | Computing |
| Remote Data Concentration | Computing |
| Robin Data Connect | Computing |
| Reverse Data Channel | Computing |
| Reference Designation Code | Computing |
| Release Deployment Change | Computing |
| Remote Data Cache | Computing |
| Random Data Channel | Computing |
| Remote Differential Compression | Computing |
| Remote Data Capture | Computing |
| Research Data Centres | Computing |
| Retailer Distribution Center | Computing |
| Resource and Design Center | Computing |
| Resolver to Digital Converter | Computing |
| Random Data Compression | Computing |
| Remote Data Control | Computing |
| Red Deer College | Educational Institute |
| Reception Diagnostic and Classification | General |
| Revolution Dance Center | General |
| Race Day Condition | General |
| Running Down Clause | General |
| Rotten Dot Com | General |
| Radnor Day Camp | General |
| Runnin Da City | General |
| Robert Deeks Construction | General |
| Retail Design Collaborative | General |
| Rapid Deployment Craft | General |
| Richardson Design Center | General |
| Recruit Division Commanders | General |
| Rotary Die Cutter | General |
| Republic Day Camp | General |
| Residence Dining Center | General |
| Reception and Diagnostic Center | General |
| Reticle Decision Center | General |
| Radar Data Center | General |
| Recycling and Dismantling Centre | General |
| Reifen Druck Control | General |
| Right Drive Car | General |
| Right Driving Convention | General |
| Ronart Drivers Club | General |
| Reference Driving Cycle | General |
| Random Drive Cycles | General |
| Rural Drive Cycle | General |
| Real Driving Conditions | General |
| Real Driving Cycle | General |
| Representative Driving Cycle | General |
| Ramp Distance Control | General |
| Ramp Damage Checker | General |
| Rockywold Deephaven Camps | General |
| Resource Documentation Centre | General |
| Relativized Dependent Choice | General |
| Return Data Carrier | General |
| Recessed Dual Connector | General |
| Rueda de Casino | General |
| Research Data Center | General |
| Red Digital Clip | General |
| Really Dumb Chick | General |
| Research Data Centers | General |
| Reseda Discount Caregivers | General |
| Ricoh Digital Camera | General |
| Radness Dot Com | General |
| Really Dang Crazy | General |
| Residential District Commissioner | Governmental |
| Relocation Directors Council | Governmental |
| Rotorua District Council | Governmental |
| Radarman Chief Petty Officer | Governmental |
| Regional Division Chief | Governmental |
| Refusing to Develop Country | Governmental |
| Remote Desktop Connection | Information Technology |
| Rez-De-Chaussée | International |
| Really Don't Care | Internet |
| Rural Dental Care | Medical |
| Really Don't Care | Messaging |
| Regional Distribution Center | Messaging |
| Rapid Deployment Capability | Military and Defence |
| Range Development Command | Military and Defence |
| Regional Destruction Center | Military and Defence |
| Regional Data Center | Military and Defence |
| Recruit Division Commander | Military and Defence |
| Remote Domain Controller | Networking |
| Remote Data Concentrator | Networking |
| Routing Domain Confederation | Networking |
| Reactor Dosimetry Center | Physics Related |
| Regional Development Corporation | Regional |
| Regional Data Collection | Regional |
| Regional Distribution Centre | Regional |
| Redencao, PA, Brazil | Regional |
| Rail Diesel Car | Regional |
| Report Designer Component | Softwares |
| Reference Designator Code | Space Science |
| Request for Document Change | Space Science |
| Research and Development Center | Space Science |
| Radio Duty Cycling | Sports |
| race deZert com | Sports |
