| Abbreviation | Definition |
|---|---|
| RHM | Restaurant, Hotel, and Convention Management |
| RHM | Right Hand Panel |
| RHP | Re- Heat Pizza |
| RHP | Retirement Housing Professional |
| RHP | Rocketdyne Hybrid Simulator |
| RHS | Right Hand Side Console |
| RHSC | Radiant Heat Temperature |
| RHT | Radioactive Heater Unit |
| RHU | Registered Health Underwriter |
| RHU | Router Header Word |
| RHU | Radioisotope Heater Unit |
| RHV | Right Hepatic Vein |
| RHW | Rockwell International |
| RI | Return Index |
| RI | Register I |
| RI | Rapid Insert |
| RIA | Radioactive Immunoassay |
| RIA | Registered Investment Advisor |
| RIASI | Research Institute on Addictions Self Inventory |
| RIB | Resurgent India Bonds |
| RIB | Rockwell International Corporation |
| RIB | Recoverable Item Breakdown |
| RIC | Regional Instructional Coordinator |
| RIC | Remote Intercomputer Communications Interface |
| RIC | Resistance Inductance and Capacitance |
| RIC | Regional Instrument Centre |
| RICP | Recurrent Intrahepatic Cholestasis Of Pregnancy |
| RID | Receiving Inspection Detail Instruction |
| RID | Reaction Injection Molded |
| RID | Review Item Disposition |
| RIDI | Right Inboard Elevon |
| RIF | Relative Importance Factor |
| RIG | Respected Internet Guitarist |
| RIG | Rate Integration Gyro |
| RIGI | Receiving Inspection General Instruction |
| RIGS | Radio- ImmunoGuided surgery |
| RIJ | Right Internal Jugular |
| RIL | Reduced Income Logging |
| RIM | Reaction Injection Molded |
| RIMG | Reinsurance Intermediary Manager |
| RIMS | Retarding Ion Mass Spectrometer |
| RIO | Radar Intercept Officer |
| RIO | Regional Inspection Officer |
| RIP | Raster Image Processor |
| RIP | Russian Imperial Porter |
| RIP | Recreation Internship Program |
| RIP | Remedy In Place |
| RIPS | Radar Impact Prediction System |
| RIPS | Runway Incursion Prevention System |
| RIR | Resolve Initial References |