The Church of St Cadoc, Llangattock-Juxta-Usk, Monmouthshire is a parish church with its datable origins in the 15th century. The church was restored in 1827 and again in 1864–5. It is a Grade II* listed building.

The church sits just south of the River Usk, next to the small hamlet of The Bryn.^[1] There is nothing datable before the 15th century, although its origins are earlier.^[2] The building was reconstructed in 1827 by the Gloucestershire engineer John Upton and restored in the mid-19th century by John Prichard.^[3] It has been little altered since that time ^[1] and remains an active parish church.^[2]

The church is constructed of Old Red Sandstone.^[3] The style is Perpendicular.^[1] The interior of the church is "very plain"^[1] but contains a surprising collection of medieval wall tiles, one dated to 1456,^[1] which are similar to those found in the, more significant, priory churches of St Mary's Priory Church, Monmouth, Tintern Abbey and the Church of St David, Llanthony.^[3] The architectural historian John Newman noted that their presence in "this modest parish church has not been explained".^[3] The church is a Grade II* listed building.^[1]

• Newman, John (2000). Gwent/Monmouthshire. The Buildings of Wales. London: Penguin. ISBN 0-14-071053-1.