Niebla is a town and municipality located in the province of Huelva, in Andalusia, southern Spain. It lies on the banks of the Rio Tinto, 30 km from Huelva and 60 km from Seville. According to the 2008 census, it has a population of 4,200 inhabitants. A 2-km town wall surrounds the perimeter of the town.

The municipality has a long historical tradition, a fact favored by its geographical location. During the Caliphate of Córdoba, it was the capital of the Cora of the same name, and during taifa period, it was the center of the Taifa of Niebla. The castle dates mostly from the 15th century. Just outside the town a Roman bridge, still in use today, crosses the Rio Tinto.