| RHS | Racing Head Service 
| Others |
| RHS | Radiation Health and Safety
| Others |
| RHS | Radiator Hose
| Others |
| RHS | Ralston High School
| Others |
| RHS | Ramona High School
| Others |
| RHS | Rampart High School
| Others |
| RHS | Randleman High School
| Others |
| RHS | Ravenwood High School
| Others |
| RHS | Rawlins High School
| Others |
| RHS | Rear Heated Seats
| Others |
| RHS | Rectangular Hollow Section
| Others |
| RHS | Red Hammer Studios
| Others |
| RHS | Red Hat Satellite
| Others |
| RHS | Red Hat Society
| Others |
| RHS | Red Hat Storage
| Others |
| RHS | Redlands High School
| Others |
| RHS | Redmond High School
| Others |
| RHS | Redwood Health Services
| Others |
| RHS | Reedley High School
| Others |
| RHS | Refrigerant Handling System
| Others |
| RHS | Refrigeration Hardware Supply
| Others |
| RHS | Refugee Health Screener
| Others |
| RHS | Regional Health Services
| Others |
| RHS | Regional High School
| Others |
| RHS | Rehabilitation and Human Services
| Others |
| RHS | Rehabilitative Health Services
| Others |
| RHS | REINTJES Hybrid System
| Others |
| RHS | Relative Humidity Sensor
| Others |
| RHS | Releasing The Hidden Splendor
| Others |
| RHS | Remote Healing System
| Others |
| RHS | Renaissance High School
| Others |
| RHS | Reproductive Health Specialists
| Others |
| RHS | Reproductive Health Surveys
| Others |
| RHS | Reseller Hosting Servers
| Others |
| RHS | Reservoir High School
| Others |
| RHS | Residential and Hospitality
| Others |
| RHS | Residential and Hospitality Services
| Others |
| RHS | Resource Host Subsystem
| Others |
| RHS | Rhinelander High School
| Others |
| RHS | Richardson High School
| Others |
| RHS | Richland High School
| Others |
| RHS | Richmond High School
| Others |
| RHS | Ride Hailing Service
| Others |
| RHS | Ridgefield High School
| Others |
| RHS | Ridgeland High School
| Others |
| RHS | Ridgeview High School
| Others |
| RHS | Ridgewood High School
| Others |
| RHS | Righetti High School
| Others |
| RHS | Right angle Hypotenuse Side
| Others |
| RHS | Right Hand Side
| Others |
| RHS | Right Hand Steering
| Others |
| RHS | Right Hyponuse Side
| Others |
| RHS | Rigid Hollow Section
| Others |
| RHS | Ringgold High School
| Others |
| RHS | River Habitat Survey
| Others |
| RHS | Riverdale High School
| Others |
| RHS | Riverhead High School
| Others |
| RHS | Riverside High School
| Others |
| RHS | Riverton High School
| Others |
| RHS | Roanoke High School
| Others |
| RHS | Robin Hood Sports Cars
| Others |
| RHS | Robinson High School
| Others |
| RHS | Roblox Halloween Series
| Others |
| RHS | ROBLOX High School
| Others |
| RHS | Rochester High School
| Others |
| RHS | Rocketdyne Hybrid Simulator
| Others |
| RHS | Rockford High School
| Others |
| RHS | Rocklin High School
| Others |
| RHS | Rockville High School
| Others |
| RHS | Rodriguez High School
| Others |
| RHS | Rolesville High School
| Others |
| RHS | Rolla High School
| Others |
| RHS | Rolled Hollow Section
| Others |
| RHS | Rolling Head Studios
| Others |
| RHS | Romanian Horticultural Society
| Others |
| RHS | Romentic Hot Singers
| Others |
| RHS | Romeoville High School
| Others |
| RHS | Roosevelt High School
| Others |
| RHS | Roseburg High School
| Others |
| RHS | Rosemead High School
| Others |
| RHS | Rosemont High School
| Others |
| RHS | Rosemount High School
| Others |
| RHS | Rosepine High School
| Others |
| RHS | Roseville High School
| Others |
| RHS | Rouse High School
| Others |
| RHS | Rowland High School
| Others |
| RHS | Rowlett High School
| Others |
| RHS | Royal Hawaii Spirits
| Others |
| RHS | Royal High School
| Others |
| RHS | Royal Historical Society
| Others |
| RHS | Royal Historyical Society
| Others |
| RHS | Royal Horticultural Society
| Others |
| RHS | Ruidoso High School
| Others |
| RHS | Rural Housing Service
| Others |
| RHS | Rural Housing Services
| Others |
| RHS | Rural Human Services
| Others |
| RHS | Rutland High School
| Others |
| RHS | Ryan High School
| Others |
| RHS | The Right Hand Sides
| Others |