a town of the Prussian monarchy, in the province of Brandenburg, at the confluence of the Spree and the Havel, in the government and 12 miles north of Potsdam. It is strongly fortified, and has a citadel, a prison, and a manufactory of arms. The principal building of the town is the church of St Nicholas, a fine edifice of the 16th century, containing many interesting monuments. Shipbuilding is carried on here; and there are also manufactories of woollen and linen cloth, leather, and earthenware. The trade and navigation of the place are considerable. Spandau was at one time the residence of the electors of Brandenburg. It was taken by the Swedes in 1631, and by the French in 1831. Pop. 9778.