The Arade (Portuguese pronunciation: [ɐˈɾaðɨ]) is a river located in the region of the Algarve, southern Portugal.

The source[2] of the river lies to the southwest of the Serra do Caldeirão mountain ridge, in a valley called Barranco do Pé do Coelho.

The mouth of the river empties into the Atlantic Ocean between the city of Portimão and the freguesia of Ferragudo, in Lagoa Municipality.

From the time of the Moors until the 19th century, the Arade was navigable up to as far as Silves[2] about 12 kilometres (7.5 mi), where an important port used to exist, especially for the cork trade.

On 23 May 2023 on a peninsula near the Arade Dam which is near Silves and is about 50 kilometres (31 mi) from where three year old Madeleine McCann was last seen in her bed at the Ocean Club in Praia da Luz on 3 May 2007 only days before her fourth birthday, Portuguese police along with German and British colleagues began a search of an area just over a 1 mile (1.6 km) long for possible evidence in the disappearance of Madeleine McCann.