Ryvingen Lighthouse (Norwegian: Ryvingen fyrstasjon) is a coastal lighthouse located on the 0.4-square-kilometre (99-acre) island of in the North Sea. It is the southernmost lighthouse in Norway. It is located in the municipality of Lindesnes in Agder county. The island lies about 5 kilometres (3.1 mi) southeast of the town of Mandal, marking the east side of the fjord leading to Mandal. The west side of the fjord is marked by the Hatholmen Lighthouse.