RC may refer to any of the following:
1. Short for release candidate, RC is a version of a software program that is still being tested, but is ready to be released. If no major issues are found in the release candidate, then it is released to the public.
2. Abbreviation for remote connection, see the remote access definition for further information about this term.
4. In Unix-like operating systems such as Linux, rc is a file name extension which stands for "run commands." An rc file contains a series of statements or commands, one per line, to be executed or evaluated by the shell. Its purpose is to configure the environment and prepare the system to run specific software.