| Duo 4 | |
| Launch Date: | March 2008 |
| Picture Format: | 1080p HDTV |
| Owner: | Duo Media Networks (Postimees Grupp) |
| Country: | Estonia |
| Area: | Estonia |
| Headquarters: | Tallinn, Estonia |
| Sister Channels: | Kanal 2 Duo 3 Duo 5 Duo 6 Kanal 7 Kino 7 MyHits Eesti Kanal SmartZone KidZone Max KidZone Mini FilmZone FilmZone Plus |
| Website: | duo4.ee/et |
| Terr Serv 2: | Digital terrestrial |
| Terr Chan 2: | Multiplex 2[1] |
Duo 4 (formerly known as Kanal 11 (literal English translation Channel 11)) is an Estonian TV channel owned by Duo Media Networks. The name of the channel was derived from a play on words; in the Estonian language, "Üksteist", the word for eleven, also means "each other". This meant that the channel promoted itself using sentences such as "We love 11".
Kanal 11 shows mainly reality shows and serials.