Language codes (2 letters) Abbreviations and Acronyms
- RMRhaeto-Romance
- RNKurundi
- ROMoldavian
- ROTarom Romanian Air Transport
- RORomanian Language (ISO 639-1 Code)
- RSRussian Federation
- RURussian Federation
- RURussian Language (ISO 639-1 Code)
- RUSRussian Federation
- RWKinyarwanda Language (ISO 639-1 Code)
- SASanskrit Language (ISO 639-1 Code)
- SDSindhi Language (ISO 639-1 Code)
- SFSentence Fragment
- SGScots Gaelic
- SGSangho
- SHSerbo-Croatian Language (ISO 639-1 Code)
- SISinghalese
- SISino Indian
- SKSlovak Koruna
- SKSlovak Republic
Last updated: — Total entries: 248