| R File Extensions |
File types with extensions that start with the letter R.
| Extension | File Type | File Summary |
| .r | Audio | Right Audio Channel File |
| .r | Manufacturer | Mac OS X Resource File |
| .r | Manufacturer | R Script File |
| .r | Manufacturer | REBOL Script |
| .r0 | Compressed | WinRAR Compressed Archive |
| .r00 | Compressed | WinRAR Compressed Archive |
| .r01 | Compressed | WinRAR Split Archive Part 1 |
| .r02 | Compressed | WinRAR Split Archive Part 2 |
| .r03 | Compressed | WinRAR Split Archive Part 3 |
| .r1 | Compressed | WinRAR Multi-Volume Archive Part 1 |
| .r1m | Audio | RealOne Streaming Media File |
| .r2 | Compressed | WinRAR Multi-Volume Archive Part 2 |
| .r21 | Compressed | WinRAR Split Archive Part 21 |
| .r30 | Compressed | WinRAR Split Archive Part 30 |
| .r3d | Video | REDCODE Video File |
| .ra | Audio | Real Audio File |
| .rad | Text | Radar ViewPoint Radar Data |
| .raf | Raster Image | Fuji RAW Image File |
| .ral | Data | WinRail Track Design File |
| .ram | Audio | Real Audio Metadata File |
| .rar | Compressed | WinRAR Compressed Archive |
| .ras | Game | Remedy Archive System File |
| .ras | Raster Image | Sun Raster Graphic |
| .ratdvd | Disk Image | RatDVD Disk Image |
| .raw | Raster Image | Raw Image Data File |
| .raw | Audio | Raw Audio Data |
| .rax | Audio | Real Music Store Audio File |
| .ray | 3D Image | Rayshade Image |
| .rb | Manufacturer | REALbasic Project |
| .rb | Manufacturer | Ruby Source Code |
| .rb | Settings | Rosebud Profile |
| .rb4 | Page Layout | Resume Builder 4 File |
| .rb4 | Settings | RobotWorks Parameters File |
| .rbc | Backup | Retrospect Backup Catalog File |
| .rbc | Manufacturer | Rembo-C Script |
| .rbf | Backup | Windows Installer Rollback File |
| .rbf | Backup | Retrospect Backup File |
| .rbk | Backup | Windows 95 Registry Backup File |
| .rbp | Manufacturer | REALbasic Project |
| .rbs | Backup | Windows Installer Rollback Script |
| .rbs | Audio | MP3 Ringtone File |
| .rbs | Audio | Rebirth Song File |
| .rbt | Data | Lego MINDSTORMS NXT Program |
| .rbx | Executable | Rembo-C Compiled Script |
| .rbxl | Game | ROBLOX Location |
| .rbxm | Game | ROBLOX Model |
| .rbxs | Manufacturer | ROBLOX Script |
| .rc | Manufacturer | Resource Script |
| .rcd | Data | Arcade File |
| .rcg | Data | Recog Character Recognition Set |
| .rcl | Disk Image | Easy CD and DVD Creator 6 Project |
| .rco | System | PlayStation Portable Resource File |
| .rcproject | Video | iMovie ’08 Project |
| .rct | Settings | Visual Studio Resource Template |
| .rcy | Audio | ReCycle 1.x Document |
| .rdb | Data | N64 ROM Database |
| .rdb | Backup | Retrospect Backup Set |
| .rdb | Video | Wavelet Video Images File |
| .rdf | Settings | Resource Description Framework File |
| .rdf | Spreadsheet | Report Definition File |
| .rdf | Disk Image | PowerProducer Disc Image |
| .rdi | Settings | Red Dragon ISecure Settings File |
| .rdl | Vector Image | MicroStation Redline File |
| .rdlc | Manufacturer | Visual Studio Client Report Definition File |
| .rdo | Settings | Xerox Rawster Document Object File |
| .rdp | Settings | Remote Desktop Configuration File |
| .rds | 3D Image | Ray Dream Studio Scene File |
| .rdx | Data | Reflex Data File |
| .readme | Text | Readme File |
| .reb | Data | Reimbursement Tracker Data File |
| .reb | Manufacturer | REBOL Script File |
| .rec | Video | Topfield PVR Recording |
| .ref | Data | Microsoft Train Simulator Reference File |
| .reg | System | Registry File |
| .reg | Settings | Registration Information File |
| .rel | Data | Norton Internet Security Log File |
| .rels | Page Layout | Open Office XML Relationships File |
| .rem | Misc | BlackBerry Encrypted Data File |
| .rep | Game | Grand Theft Auto Replay File |
| .rep | Game | StarCraft Replay File |
| .res | Manufacturer | Windows Resource File |
| .res | Manufacturer | C++ Complied Resource Script |
| .resmoncfg | Settings | Resource Monitor Configuration File |
| .resources | Manufacturer | Visual Studio Resource File |
| .resx | Manufacturer | .NET Managed Resources File |
| .ret | Data | BusinessObjects Template |
| .rev | Compressed | RAR Recovery Volume Set |
| .rex | Audio | ReCycle Loop File |
| .rez | Game | Lithtech Game Engine Resource File |
| .rez | Plugin | Escape Velocity Plug-in File |
| .rf1 | Data | Retirement Forecast File |
| .rfa | Game | Battlefield 1942 Game Package |
| .rfa | Data | Revit Family File |
| .rfb | Misc | RoboForm Bookmark File |
| .rfc | Misc | RoboForm Contact File |
| .rfd | Page Layout | Recogniform Form Designer File |
| .rfd | Game | Emperor: Battle for Dune Data File |
| .rfgs_pc | Game | Red Faction: Guerilla Saved Game File |
| .rfl | Audio | Reason ReFill Sound Bank |
| .rfm | Game | rFactor Modification File |
| .rfn | Misc | RoboForm Safenote File |
| .rfo | Data | RoboForm Option File |
| .rfp | Misc | RoboForm Passcard File |
| .rfq | Settings | RoboForm SearchCard File |
| .rft | Misc | RoboForm Identity File |
| .rft | Text | Revisable Form Text Document |
| .rft | 3D Image | Revit Family Template File |
| .rfw | System | Rockchip Firmware File |
| .rgb | Raster Image | RGB Bitmap |
| .rgb | Raster Image | Q0 Image File |
| .rge | Data | Entourage File Archive |
| .rgn | GIS | Garmin Regional Map File |
| .rgo | Data | RepliGo File |
| .rgp | Game | RealArcade Game Package |
| .rgs | Executable | Registry Script |
| .rgss2a | Game | RPG Maker VX RGSS Encrypted Archive |
| .rhp | Plugin | Rhino Plug-in |
| .rhtml | Web | Ruby HTML Web Page |
| .ric | Raster Image | NXT Image File |
| .rif | Raster Image | Painter Raster Image File |
| .riff | Raster Image | Painter Raster Image |
| .rip | Audio | Hit’n'Mix Audio Mashup File |
| .ris | Text | Research Information Systems Citation File |
| .rise | Manufacturer | RISE Editor Model File |
| .rix | Raster Image | ColoRIX Image |
| .rjs | Web | Ruby Javascript File |
| .rjs | Misc | RealJukebox Skin File |
| .rk | Compressed | WinRK File Archive |
| .rkp | Game | Rockchip MP4 Player Game |
| .rle | Raster Image | Run Length Encoded Bitmap |
| .rll | Settings | Microsoft Resource Library |
| .rm | Video | Real Media File |
| .rmd | Video | RealPlayer Media File |
| .rmf | Audio | Rich Music Format |
| .rmi | Audio | RMID MIDI File |
| .rmj | Audio | Real Media Jukebox Audio File |
| .rmm | Audio | RAM Meta File |
| .rmp | Video | RealPlayer Metadata Package File |
| .rmr | Page Layout | ResumeMaker File |
| .rms | Video | Secure Real Media File |
| .rms | Settings | Java Application Settings File |
| .rmskin | Settings | Rainmeter Skin File |
| .rmt | System | Router Firmware File |
| .rmuf | Data | Alpha Five Runtime License File |
| .rmvb | Video | RealMedia Variable Bit Rate File |
| .rmx | Audio | RealJukebox Format |
| .rnc | Manufacturer | RELAX NG Compact Syntax File |
| .rnc | Compressed | RNC ProPack Archive |
| .rnd | Misc | PGP Random Seed File |
| .rnd | Misc | Random Hash Data File |
| .rng | Audio | Nokia Composer Ringtone |
| .rng | Data | RELAX NG File |
| .rnq | Data | Renque Model File |
| .rns | Audio | Reason Song File |
| .rnx | Settings | RealPlayer Settings File |
| .rod | Data | Actuate Report Object Design File |
| .rog | Data | Roger 2 Input Data File |
| .roi | Data | Shark Sales System Data File |
| .roi | Data | Report Object Instance |
| .rol | Audio | Ad Lib Synthesized Instrument |
| .rom | Misc | Read Only Memory Image |
| .rom | Game | N64 Game ROM File |
| .roq | Video | Id Software Game Video |
| .rot | Game | Homeworld 2 Graphics File |
| .rou | Data | Gerber Route File |
| .rov | Misc | Report Object Variable |
| .rox | Data | Roxio Project File |
| .rox | Executable | Actuate Report Object Executable File |
| .roxio | Data | Roxio Project |
| .rp | Video | RealPix Clip |
| .rp2 | Game | RetroPlatform Player Program Archive |
| .rp9 | Compressed | RetroPlatform Disk Image Archive |
| .rpb | Settings | Radmin Phonebook File |
| .rpd | Data | Roleplay Designer Data File |
| .rpj | Executable | Real Pac Batch Job File |
| .rpk | Settings | RadLight Media Player Skin |
| .rpl | Game | Toribash Replay File |
| .rpm | Plugin | RealPlayer Plug-in |
| .rpm | Compressed | Red Hat Package Manager File |
| .rpp | Data | REAPER Project File |
| .rps | Settings | 3ds Max Render Preset Settings |
| .rpt | Data | Crystal Reports File |
| .rpt | Text | Generic Report |
| .rptr | Page Layout | RafflePrinter Document |
| .rpy | Game | Touhou Project Replay File |
| .rpy | Manufacturer | Python Script |
| .rpy | Game | Ren’Py Script |
| .rpyc | Game | Ren’Py Compiled Script |
| .rrr | Settings | Rhapzodé Resource Repository |
| .rrr | Backup | Registry Mechanic Backup File |
| .rrt | Data | Rhapzode Resource Template |
| .rsb | Raster Image | Red Storm Bitmap File |
| .rsc | Data | Symbian Application Compiled Resource File |
| .rsd | Database | RealSQLDatabase File |
| .rsdf | Encoded | RapidShare Download File |
| .rsm | Page Layout | WinWay Resume Deluxe Resume File |
| .rsn | Audio | Reason Project File |
| .rso | Audio | NXT Brick Audio File |
| .rsp | Data | RSLogix PLC Program File |
| .rsr | Raster Image | Poser Model Preview File |
| .rsrc | Manufacturer | Macintosh Resource File |
| .rss | Manufacturer | Symbian Application Resource File |
| .rss | Web | Rich Site Summary |
| .rst | Text | reStructuredText File |
| .rsv | Data | RSView32 Project File |
| .rsw | Data | R&R SQL Report Writer Report File |
| .rt | Text | RealText Streaming Text File |
| .rtc | Misc | Live Meeting Connection File |
| .rtd | Text | RagTime Document |
| .rte | Compressed | RTE Encoded File |
| .rte | Data | Revit Project Template |
| .rte | Data | Navigation Route |
| .rtf | Text | Rich Text Format File |
| .rtfd | Text | Rich Text Format Directory File |
| .rti | Audio | Real Tracker Instrument |
| .rtm | Misc | LabVIEW Run-Time Menu File |
| .rtm | Audio | Real Tracker Module |
| .rtp | Misc | TurboTax Update File |
| .rts | Settings | RoyalTS Remote Connection File |
| .rts | Video | QuickTime Real-Time Streaming Format |
| .rts | Audio | Real Tracker Sample |
| .rts | Video | RealPlayer Streaming Media |
| .rtx | Text | Rich Text Document |
| .ru | Manufacturer | JavaSoft JRE 1.3 Library |
| .ruf | System | Samsung DVD and Blu-ray Player Firmware File |
| .rul | Manufacturer | InstallShield Rules |
| .ruleset | Settings | Visual Studio Code Analysis Rule Set File |
| .rum | Video | Bink Video Subtitle File |
| .run | Game | Rune Map File |
| .run | Text | Runscanner Scan File |
| .run | Executable | Linux Executable File |
| .rv | Video | Real Video File |
| .rvdata | Game | RPG Maker VX Data File |
| .rvproj | Game | RPG Maker VX Project File |
| .rvt | Data | Revit Project File |
| .rvx | Audio | Real Protected Video File |
| .rw2 | Raster Image | Panasonic RAW Image |
| .rw3 | Web | RapidWeaver 3 Site File |
| .rwg | Data | Random Word Generator Project File |
| .rwlibrary | Misc | Paperless Receipt Library |
| .rwp | Web | RapidWeaver Package |
| .rwsw | Web | RapidWeaver Site File |
| .rx2 | Audio | REX2 Audio File |
| .rxdata | Game | RMXP Data File |
| .rxe | Executable | Lego Mindstorms NXT Executable Program |
| .rz | Compressed | Rzip Compressed File |
| .rzb | Data | Red Zion Book File |
| .rzk | Encoded | Red Zion Key File |
| .rzk | Text | File Crypt Password File |
| .rzn | Text | Red Zion Notes File |
| .rzs | Compressed | Red Zion Security File |
| .rzx | Encoded | File Crypt Encrypted File |