Llandaff (/lænˈdæf/; Welsh: Llandaf [ɬanˈdaːv]; from llan 'church' and Taf) is a district, community and coterminous electoral ward in the north of Cardiff, capital of Wales.

One of its main modern points of interest is the aluminium figure of Christ in Majesty (1954–5), by Jacob Epstein, which is suspended above the nave.

It consists of little more than two short streets of cottages, not lighted or paved, terminating in a square, into which the great gateway of the old palace formerly opened, and where are still several genteel houses.

Seen as a clean and green up-market countrified village location close to the fast developing city, many of the better-off coal merchants and business people chose to live in Llandaff, including the Insole family.

[10][11] Broadcasting House in Llandaff was the headquarters of BBC Cymru Wales until it relocated to Central Square in Cardiff between October 2019 and July 2020.

Its most prominent MPs were former Speaker of the House of Commons; George Thomas, and former First Minister of Wales and Welsh Labour Party leader Rhodri Morgan.

In the Senedd, Llandaff is part of the constituency of Cardiff West, whose MS since 2011 is Mark Drakeford of Labour; he succeeded Rhodri Morgan upon the latter's retirement.

The constituency is within the electoral region of South Wales Central, whose four current MSs are Conservatives Andrew RT Davies and Joel James; Plaid Cymru's Rhys ab Owen and Heledd Fychan.

Western Avenue (A48) runs through the south of the area, heading eastbound to Gabalfa and M4 J29, and westbound to Ely, Culverhouse Cross, and M4 J33.

The major employment sectors in the area are: Broadcasting House, formerly the headquarters of BBC Cymru Wales, was opened in Llandaff in 1966.

BBC Cymru Wales moved to new facilities at Central Square, Cardiff in 2020,[17] with the remaining Llandaff site due for housing development.

It played an important role in Welsh (and Cardiff) music before the building of St David's Hall in 1982, commissioning large orchestral and choral works (from Alun Hoddinott, Arwel Hughes, Daniel Jones, Norman Kay, William Mathias, Grace Williams and others) and attracting international soloists for chamber music and piano recitals.