Brehna is a town and a former municipality in the district of Anhalt-Bitterfeld, in Saxony-Anhalt, Germany. Since 1 July 2009, it is part of the town Sandersdorf-Brehna. It is situated southwest of Bitterfeld. Important in this city is the church where Katharina von Bora, the wife of Martin Luther lived. Former municipalities in Saxony-Anhalt Sandersdorf-Brehna