Fouta Djallon is a highland region in Guinea, West Africa. It receives a great deal of rainfall, and the headwaters of three major rivers, the Niger River, the Gambia River and the Senegal River, have their sources on it.

Fouta Djallon consists mainly of rolling grasslands, at an average elevation of about 900m (3,000ft). The highest point, Mount Loura , rises to 1,515m (4,970ft). The plateau consists of thick sandstone formations which overlie granitic basement rock. Erosion by rain and rivers has carved deep jungle canyons and valleys into the sandstone.

The region's main industry is banana and fruit growing, while its major town is Labé.