the capital of a circle of the same name in the Prussian province of Silesia, and government of Breslau, is situated on the left bank of the Oder, and on the Breslau and Oppeln railway, 27 miles S.E. of the former. It is well built, and has a castle (the residence of the old counts of Brieg), a lunatic asylum, a gymnasium with a good library, and several churches and hospitals. Its fortifications were destroyed by the French in 1807. Brieg carries on a considerable trade, its chief manufactures being linen, cotton, and woollen goods, hats, &c. Important cattle-markets are held here. Pop. (1849) of town 12,115, of circle 46,976.