BBC One Northern Ireland
| Logo used since 2021. | |
| Country | United Kingdom | 
|---|---|
| Broadcast area | Northern Ireland Republic of Ireland | 
| Network | BBC One | 
| Programming | |
| Picture format | 576i SDTV 1080i HDTV | 
| Ownership | |
| Owner | BBC Northern Ireland | 
| Sister channels | BBC Two Northern Ireland | 
| History | |
| Launched | 21 July 1955 | 
| Former names | BBC TV Service NI (21 July 1955 – 19 April 1964) BBC Northern Ireland (20 April 1964 – 14 November 1969) | 
| Availability | |
| Terrestrial | |
| Freeview | Channel 1 Channel 101 (HD) | 
| Streaming media | |
| FilmOn | Watch live | 
BBC One Northern Ireland is a Northern Irish free-to-air television channel owned and operated by BBC Northern Ireland. It is the Northern Irish variation of the UK-wide BBC One network.
The service is broadcast from Broadcasting House in Belfast. In the rest of the UK, BBC One Northern Ireland is available as a regional variant on most TV service providers. In the Republic of Ireland, BBC One Northern Ireland is available as a standard channel.