Denbigh (ˈdɛnbi ; Dinbych ˈdɪnbɨχ) is a market town and a community in Denbighshire, Wales. Formerly, the county town, the Welsh name translates to "Little Fortress"; a reference to its historic castle. Denbigh lies near the Clwydian Hills.
Denbigh Castle, together with its town walls, was built in by order of King Edward I. The Burgess Gate, whose twin towers adorn the symbol on Denbigh's civic seal, was once the main entrance into the town. The first borough charter was granted to Denbigh in 1290, when the town was still contained within the old town walls. It was the centre of the Marcher Lordship of Denbigh. The town was involved in the revolt of Madog ap Llywelyn in 1294–1295; 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 (1455–1487), the town was largely destroyed, subsequently moving from the hilltop to the area of the present town market.
Leicester's Church is an unfinished church. In 1579, Robert Dudley, 1st Earl of Leicester, who was also Baron of Denbigh, planned for there to be a cathedral. His intention was to move the status of city from neighbouring St Asaph. The project ran out of money, and when Robert Dudley died, it was left as ruins; now in the care of Cadw.
In 1643, during the English Civil War, Denbigh became a refuge for a Royalist garrison. Surrendering in 1646, the castle and town walls eventually fell into ruin.
The town grew around the textile industry in the 1600s, hosting specialist glovers, weavers, smiths, shoemakers, saddlers, furriers and tanners. Denbigh has been an important location for the agricultural industry throughout.
Denbigh was served by a railway station on the former London and North Western Railway, later part of the LMS. The "Vale of Clwyd" line leading north to St. Asaph and Rhyl closed in 1955, leaving Denbigh on a lengthy branch running from Chester via Mold and Denbigh to Ruthin, which closed in 1962.