Magnus of Saxe-Lauenburg (German: Magnus von Sachsen-Lauenburg) (b 1390; d 21 September 1452) was Bishop of Cammin and Hildesheim.
The father of Magnus was Duke Eric IV of Saxe-Lauenburg; his father was Sophia, a daughter of Duke Magnus II of Brunswick. His brothers were Duke Eric V of Saxe-Lauenburg and Duke Bernard II of Saxe-Lauenburg.