Coordinates: 53°11′14″N 3°24′57″W / 53.18717°N 3.41571°W / 53.18717; -3.41571

Denbigh ( /ˈdɛnbi/; Welsh: Dinbych) is a market town and community in Denbighshire, Wales. Before 1888, it was the county town of Denbighshire. Denbigh lies 8 miles to the north west of Ruthin and to the south of St Asaph. It is about 13 miles (20 km) from the seaside resort of Rhyl. The town grew around the glove-making industry. Its population at the 2001 Census was 8,783.

The first borough charter was granted to Denbigh in 1290, when the town was still contained within the old town walls. The town was involved in the revolt of Madog ap Llywelyn in 1294-95; the castle was captured in the autumn, and on 11 November 1294 a relieving force was defeated by the Welsh rebels. The town was recaptured by Edward I in December. Denbigh was also burnt in 1400 during the revolt of Owain Glyndŵr.

During the Wars of the Roses, the town was largely destroyed, subsequently moving from the hilltop to the area of the present town market. In 1643, Denbigh became a refuge for a Royalist garrison during the English Civil War. Surrendering in 1646, the castle and town walls eventually fell into ruin.