| Irigwe | iri-000 | ṛe-ʧɛ́ |
| Puragi | pru-000 | reβaⁱ |
| Rotokas | roo-000 | reβasi |
| Rotokas | roo-000 | reβasiβa |
| Alamblak | amp-000 | reβatuam |
| Cayuvava | cyb-000 | reβe |
| Mpongwe | mye-000 | reβisi |
| Mpongwe | mye-000 | reβuni |
| Mpongwe | mye-000 | reβuno |
| Mursi | muz-000 | reθ- |
| toskërishte | als-000 | r̃eθ |
| English | eng-000 | REАKT |
| English | eng-000 | re приводиться |
| 한국어 | kor-000 | RE-완전 |
| 日本語 | jpn-000 | RE雨宮 |
| xnaꞌátj tu̱ꞌ | trc-000 | reꞌèè |
| Akawaio | ake-000 | reꞌkɨ |
| Afrikaans | afr-000 | RF |
| አማርኛ | amh-000 | RF |
| العربية | arb-000 | RF |
| GeoNames Feature Codes | art-286 | RF |
| asturianu | ast-000 | RF |
| беларуская | bel-000 | RF |
| বাংলা | ben-000 | RF |
| català | cat-000 | RF |
| čeština | ces-000 | RF |
| нохчийн мотт | che-000 | RF |
| 普通话 | cmn-000 | RF |
| 國語 | cmn-001 | RF |
| Cymraeg | cym-000 | RF |
| dansk | dan-000 | RF |
| ελληνικά | ell-000 | RF |
| English | eng-000 | RF |
| Rwandan English | eng-066 | RF |
| føroyskt | fao-000 | RF |
| Wikang Filipino | fil-000 | RF |
| suomi | fin-000 | RF |
| français du Rwanda | fra-040 | RF |
| Gàidhlig | gla-000 | RF |
| Gaeilge | gle-000 | RF |
| galego | glg-000 | RF |
| ગુજરાતી | guj-000 | RF |
| עברית | heb-000 | RF |
| हिन्दी | hin-000 | RF |
| hrvatski | hrv-000 | RF |
| magyar | hun-000 | RF |
| bahasa Indonesia | ind-000 | RF |
| italiano | ita-000 | RF |
| 日本語 | jpn-000 | RF |
| ಕನ್ನಡ | kan-000 | RF |
| қазақ | kaz-000 | RF |
| ភាសាខ្មែរ | khm-000 | RF |
| ikinyarwanda | kin-000 | RF |
| кыргыз | kir-000 | RF |
| 한국어 | kor-000 | RF |
| ລາວ | lao-000 | RF |
| lietuvių | lit-000 | RF |
| മലയാളം | mal-000 | RF |
| मराठी | mar-000 | RF |
| македонски | mkd-000 | RF |
| مازرونی | mzn-000 | RF |
| Nederlands | nld-000 | RF |
| bokmål | nob-000 | RF |
| नेपाली | npi-000 | RF |
| ਪੰਜਾਬੀ | pan-000 | RF |
| فارسی | pes-000 | RF |
| polski | pol-000 | RF |
| português | por-000 | RF |
| română | ron-000 | RF |
| русский | rus-000 | RF |
| සිංහල | sin-000 | RF |
| slovenčina | slk-000 | RF |
| slovenščina | slv-000 | RF |
| español | spa-000 | RF |
| српски | srp-000 | RF |
| srpski | srp-001 | RF |
| svenska | swe-000 | RF |
| Kiswahili | swh-000 | RF |
| தமிழ் | tam-000 | RF |
| తెలుగు | tel-000 | RF |
| türkmençe | tuk-000 | RF |
| Türkçe | tur-000 | RF |
| українська | ukr-000 | RF |
| اردو | urd-000 | RF |
| oʻzbek | uzn-000 | RF |
| tiếng Việt | vie-000 | RF |
| Bahasa Malaysia | zsm-000 | RF |
| isiZulu | zul-000 | RF |
| atomic symbols | art-010 | Rf |
| ISO 80000-9 Annex A | art-255 | Rf |
| català | cat-000 | Rf |
| English | eng-000 | Rf |
| suomi | fin-000 | Rf |
| galego | glg-000 | Rf |
| hrvatski | hrv-000 | Rf |
| polski | pol-000 | Rf |
| filename extensions | art-335 | rf |
| English | eng-000 | rf |
| français | fra-000 | rf |
| slovenščina | slv-000 | rf |
| filename extensions | art-335 | rf1 |
| TechTarget file types | art-336 | RF1-Retirement-Forecast-File |
| čeština | ces-000 | RF-8 |
| English | eng-000 | RF-8 |
| magyar | hun-000 | RF–8 |
| català | cat-000 | RFA |
| English | eng-000 | RFA |
| français | fra-000 | RFA |
| português | por-000 | RFA |
| español | spa-000 | RFA |
| el maghribïya | ary-001 | Rʼfaʼ |
| filename extensions | art-335 | rfa |
| français | fra-000 | rfa |
| italiano | ita-000 | rfa |
| Limbum | lmp-000 | rfa |
| português | por-000 | rfa |
| español | spa-000 | rfa |
| Limbum | lmp-000 | rfa˩˥̄ |
| Deutsch | deu-000 | RFA Argus |
| English | eng-000 | RFA Argus |
| TechTarget file types | art-336 | RFA-Autodesk-Revit-Architecture-family-file |
| TechTarget file types | art-336 | RFA-Battlefield-1942-game-archive |
| TechTarget file types | art-336 | RFA-Battlefield-1942-Unit-Object-Texture-Archive-Electronic-Arts-Inc |
| langue picarde | pcd-000 | r’fabriqueu |
| langue picarde | pcd-000 | r’fabriquie |
| English | eng-000 | rf accelerating potential |
| English | eng-000 | rf accelerator |
| English | eng-000 | R factor |
| English | eng-000 | R-factor |
| Deutsch | deu-000 | RFactor |
| English | eng-000 | RFactor |
| français | fra-000 | RFactor |
| italiano | ita-000 | RFactor |
| español | spa-000 | RFactor |
| English | eng-000 | r factor |
| English | eng-000 | R-factor bacterial population |
| English | eng-000 | rFactor Model File |
| English | eng-000 | rFactor Modification File |
| English | eng-000 | rFactor Player File |
| English | eng-000 | rFactor Track File |
| el maghribïya | ary-001 | Rʼfad |
| English | eng-000 | rf adapter |
| Deutsch | deu-000 | RFA Fort George |
| English | eng-000 | RFA Fort George |
| Deutsch | deu-000 | RFA Fort Victoria |
| English | eng-000 | RFA Fort Victoria |
| italiano | ita-000 | rfa gene il grappolo |
| Deutsch | deu-000 | rfahren |
| Malti | mlt-000 | rfajnu |
| Malti | mlt-000 | rfajt |
| Malti | mlt-000 | rfajtu |
| Deutsch | deu-000 | rfallen |
| Deutsch | deu-000 | rfällig |
| English | eng-000 | RF alternator |
| English | eng-000 | RF ammeter |
| English | eng-000 | RF amplifier |
| English | eng-000 | RF-amplifier |
| English | eng-000 | rf amplifier |
| English | eng-000 | RF application |
| Limbum | lmp-000 | rfar |
| English | eng-000 | rf arcing |
| TechTarget file types | art-336 | RFA-Revit-Family-File |
| English | eng-000 | RF arrangement |
| Deutsch | deu-000 | RFA Sir Bedivere |
| English | eng-000 | RFA Sir Bedivere |
| Deutsch | deu-000 | RFA Sir Galahad |
| English | eng-000 | RFA Sir Galahad |
| español | spa-000 | RFA Sir Galahad |
| Deutsch | deu-000 | RFA Sir Tristram |
| English | eng-000 | RFA Sir Tristram |
| English | eng-000 | rf asymmetric bias sputtering |
| English | eng-000 | rf attenuation |
| Riff | rif-000 | řfaxā |
| čeština | ces-000 | r. fáze-čas |
| Limbum | lmp-000 | rfaʔʙ |
| Riff | rif-000 | řfāʕ |
| English | eng-000 | RFB |
| português | por-000 | RFB |
| português brasileiro | por-001 | RFB |
| português europeu | por-002 | RFB |
| español | spa-000 | RFB |
| filename extensions | art-335 | rfb |
| English | eng-000 | RFB Fantrainer |
| italiano | ita-000 | rfb gene il grappolo |
| English | eng-000 | rf-biased SQUID |
| English | eng-000 | RFBR |
| English | eng-000 | RF-breakdown |
| TechTarget file types | art-336 | RFB-RoboForm-related-file |
| TechTarget file types | art-336 | RFB-RoboForm-Siber-Systems-Inc |
| English | eng-000 | rf buncher |
| English | eng-000 | rf bunching |
| العربية | arb-000 | RFC |
| GeoNames Feature Codes | art-286 | RFC |
| čeština | ces-000 | RFC |
| 普通话 | cmn-000 | RFC |
| 國語 | cmn-001 | RFC |
| Deutsch | deu-000 | RFC |
| eesti | ekk-000 | RFC |
| ελληνικά | ell-000 | RFC |
| English | eng-000 | RFC |
| suomi | fin-000 | RFC |
| français | fra-000 | RFC |
| עברית | heb-000 | RFC |
| italiano | ita-000 | RFC |
| 日本語 | jpn-000 | RFC |
| Hangungmal | kor-001 | RFC |
| lietuvių | lit-000 | RFC |
| Nederlands | nld-000 | RFC |
| bokmål | nob-000 | RFC |
| polski | pol-000 | RFC |
| português | por-000 | RFC |
| русский | rus-000 | RFC |
| slovenščina | slv-000 | RFC |
| español | spa-000 | RFC |
| svenska | swe-000 | RFC |
| ภาษาไทย | tha-000 | RFC |
| Türkçe | tur-000 | RFC |
| tiếng Việt | vie-000 | RFC |
| filename extensions | art-335 | rfc |
| Hangungmal | kor-001 | RFC 1149 |
| русский | rus-000 | RFC 1350 |
| English | eng-000 | RFC 1766 |
| DCMI Metadata Terms | art-301 | RFC1766 |
| čeština | ces-000 | RFC1766 |
| English | eng-000 | RFC 3066 |
| DCMI Metadata Terms | art-301 | RFC3066 |
| čeština | ces-000 | RFC3066 |
| English | eng-000 | RFC 4646 |
| DCMI Metadata Terms | art-301 | RFC4646 |
| English | eng-000 | RFC 5646 |
| DCMI Metadata Terms | art-301 | RFC5646 |
| English | eng-000 | RF cable |
| íslenska | isl-000 | RFC aprílgabb |
| English | eng-000 | rf-carrying surface |
| English | eng-000 | rf cavity |
| TechTarget file types | art-336 | RFC-Contact-Information-Files |
| español | spa-000 | RFC del 1 de abril |
| English | eng-000 | R.F.C. de Liège |
| français | fra-000 | RFC de Liège |
| lietuvių | lit-000 | RFC de Liège |
| Nederlands | nld-000 | RFC de Liège |
| português | por-000 | RFCE |
| English | eng-000 | RF channel |
| English | eng-000 | RF channel synchronization |
| English | eng-000 | RF characteristic measuring set |
| English | eng-000 | RF choke |
| English | eng-000 | rf-chopper system |
| italiano | ita-000 | R.F.C. Liegi |
| English | eng-000 | RF-clipping |
| Deutsch | deu-000 | RFC Lüttich |
| English | eng-000 | rf cold tests |
| English | eng-000 | rf conduction |
| English | eng-000 | RF-connection |
| English | eng-000 | RF-connector |
| English | eng-000 | rf control system |
| English | eng-000 | RF-converter |
| English | eng-000 | r f corona |
| English | eng-000 | rf corona |
| English | eng-000 | RF coupling loop |
| dansk | dan-000 | RFC (Request For Comments) |
| svenska | swe-000 | RFC (request for comments) |
| dansk | dan-000 | RFC - Request For Comments |
| Hangungmal | kor-001 | RFC(Request For Comments) |
| TechTarget file types | art-336 | RFC-RoboForm-contact-information-file |
| italiano | ita-000 | RFCS |
| español | spa-000 | RFCS |
| English | eng-000 | R.F.C. Seraing |
| lietuvių | lit-000 | RFC Seraing |
| Nederlands | nld-000 | RFC Seraing |
| français | fra-000 | RFC Sérésien |
| English | eng-000 | R.F.C. Tilleur-Saint-Nicolas |
| English | eng-000 | R.F.C. Tournai |
| Deutsch | deu-000 | RFC Tournai |
| français | fra-000 | RFC Tournai |
| Nederlands | nld-000 | RFC Tournai |
| English | eng-000 | RF current |
| English | eng-000 | r f current |
| English | eng-000 | rf current |
| English | eng-000 | RFD |
| suomi | fin-000 | RFD |
| galego | glg-000 | RFD |
| English | eng-000 | RfD |
| filename extensions | art-335 | rfd |
| English | eng-000 | rf deflector |
| English | eng-000 | rf deflector system |
| TechTarget file types | art-336 | RFD-Emperor-Battle-for-Dune-Archive |
| TechTarget file types | art-336 | RFD-FRAMECAD-Detailer-File |
| English | eng-000 | RF diode |
| English | eng-000 | rf diode |
| English | eng-000 | rf discharge |
| English | eng-000 | RF-distortion suppression |
| English | eng-000 | RF double sputtering |
| TechTarget file types | art-336 | RFD-RecogniFORM-Form-Definition |
| English | eng-000 | rf driver |
| English | eng-000 | RF dropout compensator |