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|Parrishes||Atios, Budiño, Cans, Chenlo, Mosende, Pontellas, Porriño, Torneiros|
|• Body||Concello do Porriño|
|• Mayor||Eva De La Torre (PSOE)|
|• Total||62 km2 (24 sq mi)|
|• Land||62 km2 (24 sq mi)|
|• Water||0 km2 (0 sq mi)|
|Elevation||109 m (358 ft)|
|• Density||320/km2 (820/sq mi)|
|Demonym(s)||porriñés (m), porriñesa (f)|
|Time zone||CET (GMT +1)|
|• Summer (DST)||CEST (GMT +2)|
|Area code(s)||+34 986|
An industrial town, in the Vigo metropolitan area, it is an important economic dependency. One of its main industries is granite production; the variety of granite produced in O Porriño is known as Rosa Porriño (Porriño Pink), and is exported from the Port of Vigo mainly to Italy, Japan and China.
From O Porriño came the architect Antonio Palacios, known for the use of granite in his work, such as the Telecommunications Palace in Madrid, the García Barbón Theater in Vigo, or Porrino Town Hall amongst others.
It is the home town of the Sporting Lisboa woman basketball team player Andrea Pérez Alonso.
The municipality is formed of eight parroquias (parishes)
- Antonio Palacios, architect (1872–1945)