Valdivian Coastal Reserve, Protected coastal area in southern Chile.

The Valdivian Coastal Reserve is a protected area along the Pacific coast in southern Chile featuring temperate rainforest. The forest is home to ancient trees and diverse plant life that form a complex ecosystem.

In 2003 WWF Chile, The Nature Conservancy and local organisations bought almost 60,000 hectares that had been converted from native forest to eucalyptus pulp plantations, a conversion contested in the 1990s and early 2000s. The reserve was inaugurated on 22 March 2005. In 2012 a further 10,000 hectares were donated to the Chilean state to create Alerce Costero National Park with CONAF.

The reserve's headquarters is in the village of Chaihuín, and the Huilliche community of Huiro, on the coast south of Chaihuín, offers ecotourism services in summer. Local fishing associations own and manage the Benthic Marine Management Areas along much of the 36 km of coastline, and a pilot co-management agreement with the reserve and local NGOs studies and works to recover benthic resources in one of them.

The reserve headquarters is in the village of Chaihuín, and the reserve is open to the public with demonstration trails and beaches most visited in summer. Access runs through the Cordillera Pelada near Corral, in Los Ríos Region. The Huilliche community of Huiro, on the coast south of Chaihuín, offers ecotourism services in summer.

Two tree species thrive here for remarkably long lifespans: the Olivillo ages for centuries and the Alerce can live for thousands of years. These trees rank among the oldest living organisms on Earth.