Los Quetzales National Park, National park in San Jose Province, Costa Rica

Los Quetzales National Park is a protected area in the highlands that spans mountainous terrain covered in dense cloud forest. The park encompasses multiple elevation zones and harbors both tropical and cooler forest ecosystems.

Until July 2005 the area was the Los Santos Forest Reserve; forest cover had fallen by about 20% through agricultural expansion, prompting a stricter category. Executive Decree 32981 of 16 January 2006 created the park, Costa Rica's 28th, from reserve land and state lots, merging the former Los Santos and Cerro Vueltas biological reserves. It was backed by the Savegre River basin sustainable development project run by Spain's AECI.

The park is named after the Resplendent Quetzal, which feeds on aguacatillo trees, a relative of the avocado whose fruit is one of the bird's favourite foods. The protected area was created in 2006 to conserve quetzal breeding habitats, and its consolidation is linked to the Savegre River Basin Sustainable Development Project, backed by the Spanish Agency for International Cooperation through its Araucaria programme, which also sought economic alternatives for communities such as Providencia and San Gerardo de Dota.

Access is via Route 2, the Carretera Interamericana Sur, which forms part of the park's northeast border; there is a small ranger station and a single highly mountainous main road. The dry season runs from December to April and the rainy season from May to November, with annual rainfall of 2,000 to 3,000 mm. Trails are steep and can drop to 0 °C at higher elevations, so bring sturdy footwear, rain gear and binoculars.

Part of the Turberas de Talamanca Ramsar wetland lies inside the park, shared with Chirripó, Tapantí and neighbouring reserves. When the site was designated in 2003, this land still belonged to the Los Santos Forest Reserve; the park was carved from that reserve three years later.