Dénia is a city in the province of Alicante, Spain, on the Costa Blanca halfway between Alicante and Valencia, the judicial seat of the comarca of Marina Alta. As of 2012, it had a population of 44,455.

Dénia is home to a castle on a rocky crag overlooking the city. It was built in the 11th and 12th century and offers views around the sea, the city and the surrounding area. in the castle is the Palau del Governador its museum.

Dénia also has the Museu Etnològic with further details on the history and culture of the city.

The bonfire festival is celebrated each March. Huge paper mache statues, called fallas are set up throughout the town, and then set ablaze.

The Bous a la Mar (meaning "Bulls at the Sea") is held in July. The highlight of this week long festival is watching bulls run down the main street Marqués de Campo, only to be chased into the Mediterranean sea by those daring enough to enter a makeshift bull ring with them.

Since 1974 it has been home to painter and sculptor Joan Castejón. The town honored him as Adoptive Son of Dénia in 1999.