| Acronym | Definition |
|---|
| RRR | Reading, 'Riting, 'Rithmetic |
| RRR | Relative Risk Reduction |
| RRR | Rayman Raving Rabbids (game) |
| RRR | Reduce Reuse Recycle |
| RRR | Relative Risk Ratio |
| RRR | Return Receipt Requested (US mail) |
| RRR | Residual Resistivity Ratio |
| RRR | Required Rate of Return |
| RRR | Radical Religious Right |
| RRR | Reserve Replacement Ratio |
| RRR | Rapid Runway Repair |
| RRR | Regular Rate and Rhythm (normal cardiac physical exam) |
| RRR | Risk Reward Ratio |
| RRR | Reduccion del Riesgo Relativo (Spanish: absolute risk reduction) |
| RRR | Real Rate of Return |
| RRR | Release Readiness Review (software engineering) |
| RRR | Red Right Returning (nautical navigation) |
| RRR | Reduced Residual Radiation |
| RRR | Resource Rent Royalty (Australia) |
| RRR | Recommended Retail Rate |
| RRR | Rights, Respect and Responsibilities (education) |
| RRR | Religious Radical Right |
| RRR | Rockland Road Runners |
| RRR | RAM Rationale Report |
| RRR | Resource Recovery and Recycling |
| RRR | Real Recognizes Real |
| RRR | Race, Religion, and Representation (Conference) |
| RRR | Royal Rhodesia Regiment |
| RRR | RPG RPG Revolution (forums/website) |
| RRR | Raleigh Research Reactor (North Carolina State College) |
| RRR | Requirements Rational Report |
| RRR | Ritalin Reading Room |
| RRR | Ruff Ryder Records (record label) |
| RRR | Rappahannock Ridge Rumble (Fredericksburg, VA race) |
| RRR | Respiration, Rate, and Rhythm (Cardiac examination) |
| RRR | Return, Repair and Reshipment |
| RRR | Release Requirements Review |
| RRR | Remove, Repair & Replace |
| RRR | Resistor-Reactor Rectifier |
| RRR | Resource Requisitions Request |
| RRR | Risk Reduction Reports |
| RRR | Rotors Running Refuel |
| RRR | River Regulating Reservoir |
| RRR | Road Runner Relay (fundraising event) |
| RRR | Right-Red-Return (navigation, channel bouy color) |
| RRR | Red River Rovers (Motorhome chapter of Family Motor Coach Association) |
| RRR | Royton Road Runners (UK) |
| RRR | Romsey Road Runners (UK) |