Lalín is a municipality in the north of the province of Pontevedra, in the autonomous community of Galicia, Spain. It is the capital of the comarca of O Deza.
The town has a population of 20,158 inhabitants (2014).[2] The surface of the municipality is 326.8 km2, being the biggest municipality in the province of Pontevedra and the fourth of Galicia, with a population density of 63.85 inhabitants/km2.
Located in the northeast of the province of Pontevedra; being bordered by Silleda and Vila de Cruces to the northwest, Forcarei to the west, Agolada and Rodeiro to the northeast, Dozón to the southeast and O Irixo to the south, all of them being part of the region of Deza, except O Irixo.