Callosa d'en Sarrià is a Valencian town and municipality in the comarca of Marina Baixa, in the province of Alicante, Spain. It lies in the valley of the river Guadalest, about 50 km from the city of Alicante, and covers an area of 24.8 km2. According to the 2003 census, it had a total population of 8,060 inhabitants.
The local economy is chiefly based on tourism and agriculture, and the town is the main producer of loquat in Spain.
Its most important monuments are the Catholic archipresbyteral church of Sant Joan Baptista, built in the 18th century, and the Fortress of Bèrnia, built in the 17th century at the top of a nearby mountain to defend the city from pirates and Moriscos.