Raadio 4
| Genres: | Russian |
| Language: | Estonian |
| Location: | Tallinn, Harju Estonia |
| Website: | https://r4.err.ee/ |
| Short URL of Page: | http://rdo.fm/r/688i5 |
| CallSign: | ~ |
| Frequency: | ~ |
| Type: | Internet, FM |
| Description: | Radio 4 is part of the Estonian National Broadcasting Corporation and has the largest audience among the Russian-language media channels in Estonia. |