The title of this article is ambiguous. For other meanings, see Andalusia (disambiguation).

Andalusia (Spanish Andalucía [andaluˈθi. a]) is the southernmost of Spain's 17 autonomous communities, located on the European mainland. Andalusia borders Castile-La Mancha and Extremadura to the north, Murcia to the east, the Mediterranean Sea, the British Overseas Territory of Gibraltar, and the Atlantic Ocean to the south, and Portugal to the west. The capital of Andalusia is Seville. The headquarters of the Supreme Court of Andalusia is located in Granada.

With around 8.44 million inhabitants, Andalusia is the most populous autonomous community in Spain and the second largest in terms of surface area with 87,268 km².

The most important natural areas of Andalusia are the southern slope of the Sierra Morena, the basin of the Guadalquivir and the Betic Cordillera, which includes the Sierra Nevada. The Campo de Gibraltar, with the Rock of Gibraltar forms the southernmost part of mainland Europe. At Tarifa, the southernmost town, Europe and Africa are only 14 kilometres apart, separated by the Strait of Gibraltar.

Andalusia was often fought over in the past. Therefore, there were many cultural influences, such as the Arabs or the Romans.

The region is also known for its music, especially flamenco.