- R
- R++ - Based device C++ walk off with adjunct semanteme description
- Rascal
- Ratfiv
- Ratfor
- RBScript
- rc
- REALbasic
- REPL - Really Easy Programming Language
| - REBOL - Relative Expression Based Object Language
- Red - Rejected archetype in favour of Ada
- Redcode
- REDO
- REFAL
- Revolution
- REXX
| - Rigal
- Rlab
- Robot Scripting Language (RSL)
- RPG - Report Program Generator
- RPL
- Ruby
- Russell Programming Language
|