ERT3 (Greek: ΕΡΤ3) is a Greek free-to-air television channel, owned by the Hellenic Broadcasting Corporation, the public broadcaster of Greece. It is an entertainment channel: although it broadcasts nationwide, most of the content on ERT3 is centered towards Northern Greece: consequently, ERT3 mainly broadcasts from Thessaloniki instead of the Broadcasting House in Athens, with regional studios in various cities in the north, including Florina, Komotini, Alexandroupoli and on the islands of Paros, Mytilene, and Samos.
The channel launched as ET3 (Greek: Ελληνική Τηλεόραση 3, Ellinikí Tileórasi 3) on 14 December 1988, following the merger of state-owned TV and radio services into ERT, as a single entity.
On 11 June 2013, the Greek coalition government (then with Antonis Samaras as Prime Minister) abolished ERT and attempted to close the Thessaloniki studio, but the station's employees continued to unofficially transmit ET3 via the Internet as part of the ERT Open movement, protesting the closure of public television and producing citizen journalism.
Exactly two years later, the following coalition government (with Alexis Tsipras as Prime Minister instead) restored ERT as part of the counter-austerity measures: on the same day, ET3 adopted its current name and identity. The channel, under the new name ERT3, returned on all domestic television platforms.