Duke of Swealand

Duke of Swealand (Svealand) or Duchess of Swealand may refer to:
 * 1) Prince Magnus, Duke of Swealand  from about 1254 until 1275 (also of Södermanland), then king of Sweden 1275-90
 * 2) Prince Eric (son of Birger Jarl), Duke of Swealand 1275 (also of Småland from about 1254 until 1275)
 * 3) Prince Eric, Duke of Swealand 1284–1310 (also 1310–1318 of Södermanland, West Gothland, Dalsland, Värmland and North Halland)
 * 4) Ingeborg of Norway, Duchess of Swealand 1318–1321 in her own right (previous Prince Eric's widow)