Nothofagus macrocarpa, commonly known as roble de Santiago or Santiago's oak, is a deciduous tree in the Nothofagaceae family that is endemic to the mountains of central Chile.

The bark is rough and grayish brown with longitudinal and transverse cracks.

[3] Nothofagus macrocarpa grows at higher elevations of the Altos de Cantillana, in Melipilla Province southwest of Santiago, at approximately 2,200 meters elevation.

[3] It is also found to the east in the Andes foothills of Cachapoal Province from 500 to 2,000 meters elevation.

[1] Populations on Cerro El Roble and other nearby mountains once identified as N. macrocarpa were reclassified in 2000 as a distinct species, Nothofagus rutila.