The Church of St Peter, St Paul and St John, is the parish church of Llantrisant, Monmouthshire, Wales.

Described by the architectural historian, John Newman as "a handsome church"[2] in the Decorated style, it has been a Grade I listed building since 18 November 1980.

[3] The church is fourteenth century in origin but nothing remains of this period beyond a single lancet window in the nave.

[2] The remainder is of the fifteenth and sixteenth centuries,[2] and of the restoration by E. A. Landsdowne in 1880–81.

[2]