Barcelona (Catalan: [bəɾsəˈɫonə], Spanish: [baɾθeˈlona]) is a province of eastern Spain, in the center of the autonomous community of Catalonia.

It is bordered by the provinces of Tarragona, Lleida, and Girona, and by the Mediterranean Sea.

Its capital is Barcelona. 5.526.536 people live in the province (2011), of whom 1,621,537 live in the municipality of Barcelona. Its area is 7,733 km²

Some other cities and towns in Barcelona province include L'Hospitalet de Llobregat, Badalona, Cerdanyola del Vallès, Martorell, Mataró, Granollers, Sabadell, Terrassa, Sitges, Igualada, Vic, Manresa, Berga. See also List of municipalities in Barcelona.