Dorothea of Lorraine (24 May 1545 – 2 June 1621), was by birth a member of the House of Lorraine and by marriage to Eric II, Duke of Brunswick-Lüneburg, Duchess of Brunswick-Lüneburg-Calenburg.
Born at the Château de Deneuvre, she was the third child and second daughter of Francis I, Duke of Lorraine and Christina of Denmark.