Pegau is a town in the Leipzig district in the Free State of Saxony, Germany, situated in a fertile plain, on the White Elster, 18 m. S.W. from Leipzig by the railway to Zeitz.

It has two Evangelical churches, that of St. Lawrence being a fine Gothic structure, a 16th-century town-hall; a very old hospital and an agricultural school. In the 19th Century its industries included the manufacture of felt, boots and metal wares.