Nothofagus dombeyi, Dombey's beech,[2] coigue,[3] coihue or coigüe (from Mapudungun koywe) is a tree species native to southern Chile and the Andean parts of Argentine Patagonia.

It is a fast-growing species that can live in a wide range of climatic conditions, and forms dense forests.

The shadow produced by stands of Nothofagus dombeyi is an important factor that keeps the air around streams cool and with relatively low daily temperature variations.

One tree, felled by a storm in 1954, reportedly measured 2.55 m (8.4 ft) in diameter at the height of a man's chest and a total volume, including the branches, of 87 m³.

It forms dense forests such as those found in the Los Alerces and Nahuel Huapi national parks.

It sometimes forms mixed forests with Araucaria araucana (monkey-puzzle) trees, for example in the Villarrica National Park in Chile.