San Roque is a municipality of Spain belonging to the province of Cádiz, which in turn is part of the autonomous community of Andalusia. It is also part of the comarca of Campo de Gibraltar. Located in the southern end of the Iberian Peninsula, San Roque is a short way inland of the north side of the Bay of Gibraltar, to the north of the Gibraltar peninsula. The municipality has a total surface of 145 km2 with a population of approximately 25,500 people, as of 2005.

Cádiz is a province of southern Spain, in the southwestern part of the autonomous community of Andalusia. It is the southernmost part of mainland Spain, as well as the southernmost part of continental Europe.