TG4 (Irish: TG Ceathair; pronounced [tʲeː ɟeː ˈcahəɾʲ] or [tiː d͡ʒiː ˈcahəɾʲ]) is an Irish public service broadcaster for Irish-language speakers. The channel launched on 31 October 1996. It is available to 98% of homes in Ireland through digital terrestrial television Saorview and is available on Virgin Media Ireland, eVision, Magnet Networks and Sky Ireland. TG4 is also available to watch online live and to view previously broadcast programmes from around the world through the TG4 Player.

 

TG4 was formerly known as Teilifís na Gaeilge or TnaG, before a rebranding campaign in 1999. TG4 was the third national station to be launched in Ireland; after RTÉ One in 1961 (as Teilifís Éireann) and RTÉ Two in 1978; and was followed by TV3 in 1998. The channel has 650,000 viewers who tune into the channel each day to view a broad programming policy. It has been reported to have a share of 2% of the national television market in the Republic of Ireland and 3% of the national television market in Northern Ireland. The daily Irish-language programme schedule is its core service: seven hours of programming in Irish supported by a wide range of material in other languages, mostly English.

 

TG4 launched its high-definition channel (TG4 HD) in 2012 on Virgin Media Ireland.