| Acronym | Definition |
|---|
| RCI | Royal Caribbean International |
| RCI | Rogers Communications, Inc. (now Rogers Telecom Holdings, Inc.; Toronto, Canada) |
| RCI | Racer's Choice, Inc. (automobile racing; Tyler, TX) |
| RCI | Radio Canada International |
| RCI | Regional Cooperation and Integration (Asian Development Bank) |
| RCI | Residential Communities Initiative |
| RCI | Realtime Compression Interface |
| RCI | Resource Critical Information |
| RCI | Rotterdam Climate Initiative (Netherlands) |
| RCI | Rehabilitation Council of India |
| RCI | Relationship Coaching Institute (Campbell, CA) |
| RCI | Roof Consultants Institute |
| RCI | Radio Chine Internationale (French: China Radio International; China) |
| RCI | Resort Condominium International |
| RCI | Residential, Commercial, Industrial |
| RCI | Remote Control Interface |
| RCI | Reliability Center, Inc. (Hopewell, VA) |
| RCI | Resource Consultants, Inc. |
| RCI | Rockwell Collins, Inc. |
| RCI | Retail Confectioners International (Glenview, IL) |
| RCI | Radiant Catalytic Ionization |
| RCI | Research Casting International (est. 1987; Canada) |
| RCI | Rapid Continuous Improvement |
| RCI | Rosalynn Carter Institute for Caregiving |
| RCI | Republique de Cote d'Ivoire |
| RCI | Raritan Computer, Inc. (New Jersey) |
| RCI | Regal Cinemas, Inc. (movie theaters) |
| RCI | Research Centre Imarat (India) |
| RCI | Rectal Cranial Inversion |
| RCI | Royal Canadian Institute |
| RCI | Ruth Cohn Institute (Basel, Germany) |
| RCI | Rotator Cuff Injury |
| RCI | Rated Capacity Indicator (cranes) |
| RCI | Red de Comunicación Indígena (Spanish: Indigenous Communication Network; Argentina) |
| RCI | Rosenbaum-Cunningham International, Inc |
| RCI | Rudolph Commercial Interiors, Inc. (California) |
| RCI | Risk Control Index |
| RCI | Reactivity, Corrosivity, Ignitability |
| RCI | Regulatory Compliance Initiatives, Inc. |
| RCI | Relative Citation Impact |
| RCI | Reservoir Characterization Instrument (petroleum industry) |
| RCI | Raiffeisen Capital Investment (Romania) |
| RCI | Revival Centres International (Australia) |
| RCI | Room Condition Inventory |
| RCI | Research Computing Initiative |
| RCI | Root Caries Index |
| RCI | Riding Comfort Index |
| RCI | Remote Classroom Instruction |
| RCI | Rhodes Colleges, Inc. |
| RCI | Resistive Contrast Imaging |
| RCI | Relative Competitive Index |
| RCI | Registry Catalogue Item |
| RCI | Remittance Centers Inc. |
| RCI | Rebuilding Community International (Portland, OR) |
| RCI | Registered Construction Inspector |
| RCI | Roosevelt China Investments Corp. (investment firm; Boston, MA and Shanghai, China) |
| RCI | Radar Coverage Indicator |
| RCI | Republic Chemical Industries, Inc. |
| RCI | Rate of Climb Indicator (aviation) |
| RCI | Registration Systems, Inc. |
| RCI | Road Car Inspector |
| RCI | Rehco Consultants, Inc. (Cumberland, MD) |
| RCI | Resource Communities, Inc. |
| RCI | Recommended Course Indicator |
| RCI | Remedial Contractors Institute |
| RCI | Rice Cropping Intensity |
| RCI | Rhône Chimie Industrie (French: Rhone Chemical Industry) |
| RCI | Remote Code Injection |
| RCI | Risk and Control Inventory |
| RCI | Red Couch Interactive, LLC (Houston, TX) |
| RCI | Resonant Cavity Interferometer |
| RCI | Restricted Cervical Injection (embalming) |
| RCI | Revolutionary Concepts Incorporated (Galava guild) |
| RCI | Réseau de Compétences Informatiques (French: Network Computing Skills) |