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.

The popular resort town of Xàbia (Jávea) is nearby.

Dénia is home to a castle located 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. Within the castle is the Palau del Governador with its museum.

Dénia is also home to the Museu Etnològic with further details on the history and culture of the city.

The ferry to Ibiza and the other Balearic Islands departs daily. The city also serves as the northern terminus for a picturesque metre gauge railway line through the mountains from Alicante (popularly known as the Limón Express), run by FGV. This is not a specific tourist railway; it provides transport throughout and year and is geared to commuter use.

Dénia - Fotograf/Zeichner: Randolf Rautenberg

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 streetMarqués de Campo, only to be chased into the Mediterranean sea by those daring enough to enter a makeshift bull ring with them.