Sarrią-Sant Gervasi is one of the biggest districts of Barcelona, Spain, situated on the south-west of the city, surrounded by districts of Les Corts, Grącia, Eixample i Horta-Guinardo, and by the villages of Sant Just, Sant Feliu, Molins de Rei and Sant Cugat. It's formed by the old villages of Sarrią (added to Barcelona in 1927), Vallvidrera (added to Sarrią in 1890), Santa Creu d'Olorda (added to Sarrią in 1916) and Sant Gervasi de Cassoles (added to Barcelona in 1897). The first written document found about Sarrią dates from the year 987, and the origins of the village are a Roman colony. The old Monestir de Pedralbes belonged to the village of Sarrią and now it's the Thissen-Bornemisza museum of Barcelona.

Nowadays, Sarrią is still a small village in the middle of Barcelona, with narrow streets and lovely houses, although the city pressure is hurting this image constructing big modern buildings in place of small houses.

Part of the Collserola mountain belongs to the district, where the Tibidabo and the Obervatori Fabra are, and is a popular place to promenade by bike or by foot, or to stop by the road to Sant Cugat with impressive views over the city.