| R&C | Ratchet & Clank 
| Others |
| R&C | Reasonable and Customary
| Others |
| R&C | Requirements & Compliance
| Others |
| R&C | Rhymes & Chimes
| Others |
| R&C | Rod and Custom Magazine
| Others |
| R/C | Radio Command
| Others |
| R/C | Rate of Climb
| Others |
| RC | Atlantic Airways
| Others |
| RC | C++ Resource script
| Others |
| RC | Civil Revolution
| Others |
| RC | EMACS Configuration Record
| Others |
| RC | Race Car
| Others |
| RC | Race Competition
| Others |
| RC | Rachels Contest
| Others |
| RC | Racing Car
| Others |
| RC | Racing Champions
| Others |
| RC | Racing Club
| Others |
| RC | Racing Coupe
| Others |
| RC | Racist Coward
| Others |
| RC | Radiative Correction
| Others |
| RC | Radical Coupe
| Others |
| RC | Radicon Co., Ltd
| Others |
| RC | Radio Caller
| Others |
| RC | Radio Component
| Others |
| RC | Radio Control
| Others |
| RC | Radio Controlled
| Others |
| Rc | Radius of Curvature of river or stream
| Others |
| RC | Raiding Cavalry
| Others |
| RC | Railway Conqueror
| Others |
| RC | Ramsey County
| Others |
| RC | Rancho Cucamonga
| Others |
| RC | Range Command
| Others |
| RC | Range of Criteria
| Others |
| RC | Ratchet and Clank video game
| Others |
| RC | Rate Change
| Others |
| RC | Rate Command
| Others |
| RC | Rating and Certification
| Others |
| RC | Raw Command
| Others |
| RC | Rc Command
| Others |
| RC | RCL Corporation
| Others |
| RC | Re-Evaluation Counseling
| Others |
| RC | Reaction Center
| Others |
| RC | Reaction Co-efficient
| Others |
| RC | Reaction Control
| Others |
| RC | Reactive Coalecent
| Others |
| RC | Reactive Coalescent
| Others |
| RC | Read and Cover
| Others |
| RC | Read Commands
| Others |
| RC | Reading Comprehension
| Others |
| RC | Real Cool
| Others |
| RC | Reality Check
| Others |
| RC | Really Cheap
| Others |
| RC | Really Close
| Others |
| RC | Really Complicated
| Others |
| RC | Really Cool
| Others |
| RC | Rear Column
| Others |
| RC | Rebound and Compression
| Others |
| RC | Receive Clock
| Others |
| RC | Reconfigurable Computing
| Others |
| RC | Recorded Cassette
| Others |
| RC | Recovery Controller
| Others |
| RC | Recreation Center
| Others |
| RC | Recurring Cost
| Others |
| RC | Recursive Control
| Others |
| RC | Red Cedar
| Others |
| RC | Reduce Candidate
| Others |
| RC | Reduced Configuration
| Others |
| RC | Reduced Cost
| Others |
| RC | Reference Code
| Others |
| RC | Reference Collection
| Others |
| RC | Reference Counted
| Others |
| RC | Reflection Coefficient
| Others |
| RC | Reformed Church
| Others |
| RC | Refused Classification
| Others |
| RC | Reggio Calabria (Provence)
| Others |
| RC | Region Centrale
| Others |
| RC | Region Code
| Others |
| RC | Region Commissioner
| Others |
| RC | Regional Center
| Others |
| RC | Regional Colloquial
| Others |
| RC | Regional Commissioner
| Others |
| RC | Regional Consultant
| Others |
| RC | Regional Coordinator
| Others |
| RC | Registered Company
| Others |
| RC | Registration Certificate
| Others |
| RC | Regular Carbine
| Others |
| RC | Reinforced Concrete
| Others |
| RC | Relative Clause
| Others |
| RC | Relative Coordinates
| Others |
| RC | Relativistic Correction
| Others |
| RC | Release Candiate
| Others |
| RC | Release Candidate
| Others |
| RC | Release Command
| Others |
| RC | Religious of the Cenacle
| Others |
| RC | Remand Centre
| Others |
| RC | Remote Connection
| Others |
| RC | Remote Control
| Others |
| RC | Remote Controlled
| Others |
| RC | Renaissance College
| Others |
| RC | Rendering Context
| Others |
| RC | Replacement Cost
| Others |
| RC | Requirements Contract
| Others |
| RC | Research Center
| Others |
| RC | Research Chemical
| Others |
| RC | Research Commons
| Others |
| RC | Reserve Capacity
| Others |
| RC | Reserve Component
| Others |
| RC | Resident Coordinator
| Others |
| RC | Resin Coated
| Others |
| RC | Resistor-Capacitor
| Others |
| RC | ResourCe
| Others |
| RC | Resource Compiler
| Others |
| RC | Resource Configuration
| Others |
| RC | Resource Conservation
| Others |
| RC | Resource Control
| Others |
| RC | Respiratory Congestion
| Others |
| RC | Responsibility Center
| Others |
| RC | Retained Customers
| Others |
| RC | Return Code
| Others |
| RC | Revenue Collection
| Others |
| RC | Revenue Cutter
| Others |
| RC | Reverse Chronology
| Others |
| RC | Reverse Circulation
| Others |
| RC | Reverse Code
| Others |
| RC | Reverse Current
| Others |
| RC | Revolutionary Control
| Others |
| RC | Revolutionary Council
| Others |
| RC | Rexus Coupe
| Others |
| RC | Richard Childress
| Others |
| RC | Ridley College
| Others |
| RC | Rig Conductor
| Others |
| RC | Right Check
| Others |
| RC | RigidChips
| Others |
| RC | Ring Count
| Others |
| RC | Riot Chick
| Others |
| RC | River Cats
| Others |
| RC | River Current
| Others |
| RC | Riverside College
| Others |
| RC | Rivest Cipher
| Others |
| RC | Rivest's Cipher/Ron's Code
| Others |
| RC | Road Reconnaissance
| Others |
| RC | Roanoke College
| Others |
| RC | Robert Clark
| Others |
| RC | Robert College
| Others |
| RC | Roberto Carlos
| Others |
| RC | Roblox is Cool
| Others |
| RC | Robot Control
| Others |
| RC | Rock Candy
| Others |
| RC | Rock Collection
| Others |
| RC | Rocking Chair
| Others |
| RC | Rocky Chelsea
| Others |
| RC | Roger Curry
| Others |
| RC | Rogers Centre
| Others |
| RC | Roletosoft Commander
| Others |
| RC | Roll Call
| Others |
| RC | Roman Catholic
| Others |
| RC | Ron's Cipher
| Others |
| RC | Roof Conduit
| Others |
| RC | Rookie Collection
| Others |
| RC | Room Compensation
| Others |
| RC | Room Criterion
| Others |
| RC | Root Canal
| Others |
| RC | Rosslyn Connecting Railroad
| Others |
| RC | Rotary Club
| Others |
| RC | Rotation Control
| Others |
| RC | Rotten Cat
| Others |
| RC | Roundcube
| Others |
| RC | Royal Challenge
| Others |
| RC | Royal Challengers
| Others |
| RC | Royal College
| Others |
| RC | Royal Commission
| Others |
| RC | Royal Crockery
| Others |
| RC | Royal Crown
| Others |
| RC | Rubber Cement
| Others |
| RC | Rubber Chicken
| Others |
| RC | Rubik's Cube
| Others |
| RC | Rudy's Cellular
| Others |
| RC | Rugby Club
| Others |
| RC | Run and Compile
| Others |
| RC | Run Command
| Others |
| rc | Run Commands
| Others |
| RC | Run Control
| Others |
| RC | Runlevel Control
| Others |
| RC | Running Club
| Others |
| RC | Runs Created
| Others |
| RC | Runtime Command
| Others |
| RC | Russ Collins
| Others |
| RC | Rutabaga Casserole
| Others |