RC - Reference.org

rc, the default Command line interface in Version 10 Unix and Plan 9 from Bell Labs
.rc (for "run commands"), a filename extension for configuration files in UNIX-like environments
rc, a file extension and compiler for Microsoft Windows resource scripts
Reconfigurable computing, a computer architecture
Release Candidate, a term used in software engineering
Return code, used to identify errors or other aspects of software behavior
RigidChips, a rigid body simulator program
"Rivest's Cipher", a term used in cryptographic algorithms
RoundCube, a web-based IMAP e-mail client
RealityCapture, a photogrammetry software

SJ Rc, a Swedish locomotive
Reinforced concrete, concrete incorporating reinforcement bars ("rebars")
Research chemicals, chemical substances intended for research purposes and laboratory use
- Pharmacological Research Chemical, in laboratory use and "grey" markets for psychoactive drugs
Reverse Circulation, a term used in drilling rig
Ridge Connector
Ritchey–Chrétien telescope, a specialized variant of the Cassegrain telescope
Lexus RC, a compact executive two-door GT coupé
Peugeot RC, a concept car
"Rc" or "Rc" may refer to the C scale of the Rockwell scale, though this is normally denoted "HRC"

Arts and entertainment

RC (Toy Story), a character from the Disney Pixar film franchise
Refused Classification, a designation by the Office of Film and Literature Classification (Australia) for a banned film
Star Wars: Republic Commando, a first-person shooter game for Xbox and PC
Robot Chicken, a TV show on Adult Swim
Rubik's Cube, a toy

Atlantic Airways (IATA airline code RC)
Rainforest Cafe, a jungle-themed restaurant chain
Recurse Center, a programming retreat and intentional community in New York, New York, United States
Re-evaluation Counseling, an organization for personal growth and social change
Resistance Council of Uganda
Restorative Circles, a community-based form of restorative justice
Civil Revolution, a short-lived political alliance in Italy
Union Revolutionary Council, the supreme governing body of Burma from 1962 to 1974
Royal Caribbean Group, a cruise line holding company
- Royal Caribbean International, a cruise line brand owned by Royal Caribbean Group
Royal commission, a major ad-hoc formal public inquiry into a defined issue in some monarchies
Royal Crown Cola, a soda producer, also known as RC Cola

Rogers Centre, a multi-purpose stadium, home of the Toronto Blue Jays and Toronto Argonauts
Rosario Central, a football club in Argentina
Royal Challengers Bangalore, an Indian Premier League team
Runs created, a baseball statistic
Rugby Club

ṛc "verse" in Sanskrit
rc "R's chankas
RC Roads, Puducherry, India
Acronym of Metropolitan City of Reggio Calabria, a metropolitan city in southern Italy.
Relative clause, in linguistics, a subordinate clause that modifies a noun
Reserve Component, in the United States military
Revenue Commissioners, in Ireland
Roman Catholic, a religion