36 File Extensions starting with R
| .R00 | WinRAR Archive Partial File |
| .RA | RealMedia Audio File |
| .RAD | Radiance Image |
| .RAF | Raw Image File |
| .RAM | RealMedia Audio File |
| .RAR | WinRAR Compressed Archive |
| .RAS | Sun Raster Image |
| .RAST | Sun Rasterfile |
| .RAW | Raw Image File |
| .RC | C++ Resource Compiler Script |
| .REV | WinRAR Recovery Volume |
| .RGB | Q0 Image |
| .RGB | Silicon Graphics RGB Image |
| .RGBA | Silicon Graphics RGB Image |
| .RGH | ZZ Rough Image |
| .RIX | ColoRIX Image |
| .RL4 | Windows Bitmap Image |
| .RL8 | Windows Bitmap Image |
| .RLA | Wavefront Raster Image |
| .RLB | Wavefront Raster Image |
| .RLC | Image Systems RLC2 Graphic Image |
| .RLE | ADEX Image |
| .RLE | Intergraph Format Image |
| .RLE | Utah raster Image |
| .RLE | Windows Bitmap Image |
| .RM | RealMedia Streaming Media File |
| .RMVB | RealMedia Variable Bitrate Media File |
| .RP | Rainbow Painter Image |
| .RPBM | Portable Bitmap Image |
| .RPGM | Portable Greyscale Image |
| .RPM | RunPaint (Multicolor) Image |
| .RPNM | Portable Image |
| .RPPM | Portable Image |
| .RS | Sun Rasterfile |
| .RSB | Red Storm Image |
| .RTF | Rich Text Format Document |