| rdb | Oracle Database Root |
| rdb | Redis Database |
| rdb | Retrospect Backup Set |
| rdb | Val Nav Database |
| rdbx | RiScan Pro Point Cloud Data |
| rdc | CYANA Residual Dipolar Coupling Restraint File |
| rdd | IBM Informix Genero Studio Data Schema |
| rdd | ReliaSoft ALTA RDD Data |
| rdf | Burli Newsroom System Data |
| rdf | Chromeleon Report Definition |
| 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 |
