Sant Feliu de Llobregat is an industrial city and municipality in Catalonia, Spain, in the province of Barcelona. It is the capital of the comarca of Baix Llobregat, and the see of a bishopric since June 2005.Sant Feliu is situated in the valley of the river Llobregat, and goes up to Parc de Collserola. The closest mountains to the city, which belong to the Serra de Collserola, are the Puig d'Olorda, the Penya del Moro, the Puig Aguilar and the Puig Sant Pere Màrtir. The Riera de la Salut flows from the mountains through the city and ends in the Llobregat river, it is usually dry as it only carries water after heavy rain. Steam-driven textile factories came early to the town: Bertrand; and Solà and Sert are the most important firms today. But the heavy industrialisation of the town and its region came with the twentieth century introduction of electricity. Rose growing has been an important industry in Sant Feliu since the beginning of the twentieth century.
Sant Feliu de Llobregat has a population of over 44,474 people.