St Meugan's Church was the original parish church of Ruthin, in Denbighshire, Wales. Located about 1.5 km east of the centre of the town, the church is dedicated to Saint Meugan, a Welsh saint of the 5th/6th centuries. Although with earlier origins, the present church dates to the 13th century, with additions and enlargements in the following two centuries. St Meugan's was later superseded as the parish church of the town by the more centrally-located St Peter's Church. It remains an active church in the Diocese of St Asaph and is a Grade I listed building.

The Church of St Meugan stands about a mile east of the town of Ruthin. It is dedicated to Saint Meugan, a Welsh saint of the 5th or 6th centuries. Cadw suggests that the dedication references the site of a 6th-century llan settlement. It was damaged during the Conquest of Wales by Edward I and compensation was paid by the king's commissioners. The roof and rood screen date from the 15th century. The church was restored by Henry Kennedy, Diocesan Architect to the See of Bangor, in 1852.

St Meugan's was replaced as the town's parish church by the more centrally-located St Peter's Church. It remains an active parish church in the Diocese of St Asaph and occasional services are held.

St Meugan's is a single-chamber church, the nave and chancel combined, with a south porch and a bellcote. The building materials are limestone and sandstone with a Welsh slate roof. The architectural historian Edward Hubbard, in his 2003 Clwyd volume of the Pevsner Buildings of Wales, notes the impressive collection of funerary monuments dating from the 16th to the 19th centuries. The Royal Commission on the Ancient and Historical Monuments of Wales (RCAHMW) records the "fine" seven-bay collar truss roof

St Meugan's is a Grade I listed building. A shaft, all that remains of its 15th century churchyard cross, is listed at Grade II*, and a monument in the churchyard is listed at Grade II.

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  The interior
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  The "fine" collar truss roof
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  Monument in the church
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  Shaft of the churchyard cross

• Hubbard, Edward (2003). Clwyd (Denbighshire and Flintshire). The Buildings of Wales. New Haven and London: Yale University Press. ISBN 978-0-300-09627-9. OCLC 315792534.

• Media related to St Meugan's Church, Llanrhydd at Wikimedia Commons