Cervillego de la Cruz is a municipality in Spain, located in the province of Valladolid within the autonomous community of Castile and León. It lies in the northern part of the country's interior, in a region characterised by the broad plains of the Duero basin.
The municipality is small, with a population recorded as 139 inhabitants in the 2004 census carried out by Spain's National Statistics Institute (INE). Like many rural settlements in this part of Castile and León, it is a compact village surrounded by open countryside and agricultural land.
Its administrative status as a municipality means it has its own local council, despite its very small size. The name Cervillego de la Cruz distinguishes it from other places bearing the name Cervillego.