| rdf | ICRA Site Label Data |
| rdf | Oracle Database Report Binary Source |
| rdf | Reaction Data File |
| rdf | ReDIF Template |
| rdg | SVAL Ridge Data |
| rdh | Siemens MR Spectroscopy Header Data |
| rdi | SPEFO Differential Spectrum Data |
| rdic | StarDict Dictionary Resource |
| rdj | JCanyon Texture Data |
| rdl | Bentley MicroStation Redline Data |
| rdl | Symbian OS Recogniser Library |
| rdm | Remote Desktop Manager Session Data |
| rdmj | Remote Desktop Manager Report Settings Data |
| rdmj | Remote Desktop Manager Session Data |
| rdml | Real-time PCR Data Markup Language Data |
| rdn | Carlson 2016 Road Network Data |
| rdo | Oracle Database Redo Log |
| rdox | Reflection Desktop Session Data |
| rdr | Dynamic Report Decoder File |
| rdr | Remote Desktop Manager Report Settings Data |
| rds | Microsoft SQL Server Reporting Data Source |
| rds | WAsP v4 Roughness Description |
| rdt | Adobe Captivate RoboDemo Template |
| rdx | Borland Reflex Data File |
| rdy | Ready Pro Accounting Data |
| rdy | TSP-INet Server Acknowledge Data |
| rdy | TSP-INet Server Data |
| rdz | Mandrake Linux Install Data |
| rdz | RemoteDocs Encrypted Document |
| re1 | Hy-Tek Meet Manager Registration Data |
