The Costa Region or Costa Chica lies on the Pacific coast of the state of Oaxaca, Mexico, south of the more mountainous Sierra Sur inland from the coast. It includes the districts of Jamiltepec, Juquila and Pochutla.

Oaxaca, officially the Free and Sovereign State of Oaxaca, is one of the 32 states that compose the Federative Entities of the United Mexican States. It is divided into 570 municipalities, of which 418 are governed by the system of usos y costumbres with recognized local forms of self-governance. Its capital city is Oaxaca de Juárez.