Quercus pyrenaica is native to the
Iberian Peninsula and parts of southwest France and northern Morocco inhabiting mainly subatlantic or continental environments up to in elevation. In the Iberian Peninsula, which represents 95% of its population, it occupies mainly the northern portion, south of the
Cantabrian Mountains, very common in the west of the Peninsula in the northern half of mountainous Portugal, and rare on the east It is adapted both to sub-humid temperate and Mediterranean semi-arid conditions, from the humid
Peneda-Gerês National Park in Portugal, to the semi-arid Spanish central plain. It is also adapted to survive in hot local temperatures. It is thought to have a short growth season to avoid the summer drought. It is often the dominant species in the forests in which it occurs. Its acorns are dispersed by birds and small mammals. ==Threats==