Gaucín is a town and municipality located in the mountains of Andalusia in the province of Málaga in southern Spain. It is inland from Marbella, Puerto Banús and Estepona and not far from Ronda.

The village has a population of approximately 2,000. It lies about 600 metres above sea level in the Sierra del Hacho, dominated by the Castillo del Aguila (Eagle's Castle), originally a Roman stronghold, expanded by the Arabs.

Gaucín is known for its views of Gibraltar, the Strait of Gibraltar and Morocco, as well the surrounding mountain scenery. It can be used as a base for visits to the so-called pueblos blancos of Andalusia. The village is reached by a 24 km climb up a mountain road and presided over by a medieval castle. The population is augmented by a growing group of British expatriates. In the tourist shops, cork items are popular, because cork forests surround the village.

Gaucín has been the inspiration of a number of artists and writers, and has been referred to as the "balcony of the Ronda Mountains, where the Holy Child appeared to St. John of God: the illustrious, always noble, very hospitable village of Gaucín." Gaucín offers visitors to the region a panoramic view to the Mediterranean including the rock of Gibraltar.

In Gaucín fossils can be found in the stoneworks of city building and street constructions.