The Guadalhorce is the principal river of the Province of Málaga in southern Spain.
Its source is in the Sierra de Alhama in the Province of Granada, from which it drains the depression of Antequera, flowing for 166 kilometres through southern Andalusia into the Mediterranean west of the city of Málaga. It has the greatest volume of flow of any river in the Costa del Sol region after the Guadiaro.
