Tower of St Hilary's Church, Denbigh

The Tower of St Hilary's Church is a Grade I listed tower in Denbigh, Denbighshire, north Wales. It lies to the north of Denbigh Castle and belonged to the former garrison church. The church dates to the period that Henry de Lacy, Earl of Lincoln built the borough town in around 1290. First mentioned in 1334, in the 1530s Leland wrote: "goodlye and large chappelle in the old towne... whither most of the new towne do yett cumme". During the English Civil War, on 28 September 1645 a service at the church was attended by Charles I, the Archbishop of York, Lord Keeper Williams and numerous other important officials.

The limestone rubble church with red and brown and green sandstone dressings was abandoned in 1874 when a church was erected at St Mary's Church, Lenten Pool. In 1923 the church was largely demolished, leaving just the tower of roughly 14 metres (46 ft). The tower became a Grade I listed building on 24 October 1950.