The Château Moncade is a ruined castle in the commune of Orthez in the Pyrénées-Atlantiques département of France.

[1] Construction of the castle was started in 1242 by the Gaston VII, Viscount of Béarn (the keep, known as the tour de Moncade) taking advantage of the absence of Edward III.

Standing on top of a hill above the town, it afforded views of the surrounding county over a radius of more than 30 kilometres (19 mi).

The central tower was surrounded by high curtain walls and moats up to 15 metres (49 ft) deep.

[4] The only remains are the keep (in a good state of preservation), the moats (in course of restoration) and remnants of the curtain wall.