Blotstulka, or Blot-Tulca, (11th century ) is a name known in legend for an alleged Swedish medieval queen consort, spouse of King Blot-Sweyn of Sweden (reign 1084–1087). The name can be seen as the equivalent to that of her spouse, with the meaning: "The woman Sacrificer" or "The Maiden Sacrificer"; as her spouses name was "Sweyn the Sacrificer", which can also be translated to "The man who performs the sacrifices".
Not much is known about this Queen. The date of her birth and death is unknown. She is the possible mother of the alleged son of Blot-Sweyn, Eric of Good Harvests. She was married to Sweyn before he became king and was alive to be queen during his reign. She is the last known Pagan queen in Sweden and in Scandinavia. She became queen of Sweden when her spouse ascended to the throne in 1084. In 1087, her husband King Sweyn was deposed and killed; according to tradition, by being surrounded in his home, which was set on fire. No murder of a female is recorded, and it was also the custom to allow the women of the household to depart from the building in such a situation. Queen Blotstulka is therefore expected to have survived the deposition of her spouse. The above is related from legend. Nothing factual about her life is known.