| RADIUS | Remote Access Dial In User Service 
| Others |
| RADIUS | Remote Aims Data Input User System
| Others |
| RADIUS | Remote Authentication And Dial In User Service
| Others |
| RADIUS | Remote Authentication dial In User Service
| Others |
| RADIUS | Remote Authentication Dial In User Services
| Others |
| RADIUS | Remote Authentication Dial-In User Service
| Others |
| RADIUS | Remote Authentication in Dial In User Service
| Others |
| RADIUS | Research And Development For Image Understanding Systems
| Others |
| RADIUS | Research And Development In The United States
| Others |
| RADIUS | Research Archive on Disability In the U S
| Others |