| radio | wireless |
| Radio Bremen | Radio Bremen |
| Radio Corporation of America | RCA |
| Radio Days | Radio Days |
| Radio Free Europe | Radio Free Europe |
| Radio Jerevan | Radio Yerevan |
| Radio Luxembourg | Radio Luxembourg |
| Radio Telefís Éireann | Radio Telefís Éireann |
| Radioactive Man | Radioactive Man |
| radioaktiv | radioactive |
| radioaktiv bomb | dirty bomb |
| radioaktiv förorening | radioactive pollutant |
| radioaktiv kontamination | radioactive contamination |
| radioaktivitet | radioactivity |
| Radioaktivität | Radio-Activity |
| radioaktivt avfall | nuclear waste |
| radioaktivt nedfall | fallout |
| radioaktivt regn | rainout |
| radioaktivt spårämne | radioactive tracer |
| radioaktivt stoftnedfall | radioactive fallout |
| radioaktivt ämne | radioactive substance |
| radiobil | patrol car |
| radiobolag | broadcasting corporation |
| radioelement | radioelement |
| radiofrekvens | radio frequency |
| radiofyr | radio beacon |
| Radiogalax | Radio galaxy |
| Radiohead | Radiohead |
| Radioisotopgenerator | Radioisotope thermoelectric generator |
| radiokativ soptipp | radioactive dumping |
| radiolog | radiologist |
| radiologi | radiology |
| Radiologiska vapen | Radiological weapon |
| Radiometrisk datering | Radiometric dating |
| Radions historia | History of radio |
| radionuklid | radionuclide |
| radioprogram | radio programme |
| Radioreklam | Radio commercial |
| radiorör | vacuum tube |
| radiostation | station |
| Radiostationen i Grimeton | Grimeton VLF transmitter |
| radiosändning | radio transmission |
| radioteater | radio play |
