Dorothea Maria Lösch (1730 – 2 February 1799), was a Swedish master mariner, known for the incident during the Russo-Swedish War (1788–90) in which she commandeered a Swedish ship during a crisis. She was the first female in Sweden to be given the rank of Kapten in the Swedish Navy (approximately the equivalent of lieutenant commander in the British Navy). Her name has also been spelled Losch and Läsch.