A town in Prussia on the Strengbach, on the railway from Berlin to Weissenfels. Pop. (1905) 1770. Its industries include quarrying and malting, and the manufacture of sugar and machinery. Landsberg was the capital of a small margraviate of this name, ruled in the 12th century by a certain Dietrich, who built the town. Later it belonged to Meissen and to Saxony, passing to Prussia in 1814.