Nicoya, Gulf of, inlet of the Pacific Ocean, Central America, between the Nicoya Peninsula and the northwest mainland of Costa Rica. The catch from the fine fishing in the gulf is canned at Puntarenas. The village of Nicoya on the peninsula was probably the first Spanish settlement (c.1530) in Costa Rica.
The Gulf of Nicoya (Golfo de Nicoya) is an inlet of the Pacific Ocean, located at . It separates the Nicoya Peninsula from the mainland of Costa Rica, and encompasses a marine and coastal landscape of wetlands, rocky islands and cliffs.