Maurice of Saxe-Lauenburg (1551 – 2 November 1612, Buxtehude) was the fourth son of Francis I of Saxe-Lauenburg and Sybille of Saxe-Freiberg (Freiberg, *2 May 1515 – 18 July 1592*, Buxtehude), daughter of Duke Henry IV the Pious of Saxony.
In 1588 his mother played a prominent role in his affair with Gisela von Tschammer, against whom she initiated a trial witchcraft.
As duke Maurice remained passive and lived in the abbot's house until his death.
In 1581 Maurice married Katharina von Spörck; however, they divorced the following year.
With his mistress Gisela of Saxony (married with Adam von Tschammer) Duke Maurice had two illegitimate sons: This article related to German royalty (1871–1919) is a stub.