BBC One Northern Ireland is the national variation for BBC Northern Ireland of the network BBC One service broadcast by the BBC. The service is broadcast in Northern Ireland from Broadcasting House in Belfast. Outside Northern Ireland the service is available on Sky (UK) channel 953 and across the border in the Republic of Ireland on Sky (ROI) Channel 141.
On 24 October 2012, an HD variation of BBC One Northern Ireland was launched, to coincide with the completion of the digital switchover process in Northern Ireland. On 18 November 2013, BBC One Northern Ireland HD was swapped with the SD channel on Sky's EPG for HD subscribers.