Denbigh (Welsh: Dinbych) is the former county town of Denbighshire, Wales. The town lies on the River Clwyd and grew around the glove-making industry.

Notable buildings in Denbigh include Denbigh Castle , the town walls begun in 1282 including the Burgess Gate , and Leicester's Folly , and an unfinished church begun in 1579, which was going to be a cathedral with the title of city to be transferred from neighbouring St Asaph. The project ran out of money and the grounds are now used as a tennis court by Howell's School. Other attractions in the town include a museum, while famous people associated with Denbigh include the cartographer Humphrey Lloyd , the playwright Twm o'r Nant , the poet Rhoda Broughton, the journalist and explorer Henry Morton Stanley, and the writer Kate Roberts.

Denbigh hosted the National Eisteddfod in 1882, 1939 and 2001.