Translink is the brand name of the Northern Ireland Transport Holding Company (NITHCo), a public corporation in Northern Ireland which provides the public transport in the region. NI Railways, Ulsterbus and Metro are all part of Translink. It is led by CEO Chris Conway.

Ulsterbus is a public transport operator in Northern Ireland and operates bus services outside Belfast. It is part of Translink, the brand name for the subsidiary operating companies of the Northern Ireland Transport Holding Company, which also includes Northern Ireland Railways and Metro Belfast.