Magdalena Adriaantje (Magda) Berndsen-Jansen (born 4 May 1950) is a Dutch former politician and police officer, born in Leiden. As a member of Democrats 66 (D66), she was a member of the House of Representatives of the Netherlands between 17 June 2010 and 1 November 2015. She focused on matters of safety, judiciary and police. Judith Swinkels replaced her.
Berndsen was mayor of Obdam and Beverwijk, and acting mayor of Súdwest-Fryslân and Dongeradeel, and also corps chief of Gooi en Vechtstreek Police and Friesland Police.