Margareta Clausdotter (died 10 December 1486) was a Swedish writer and genealogist, a Roman Catholic nun of the Bridgettine order and from 1473 until her death, abbess of the Vadstena Abbey. Christina Brask translated the Antiphonarium for her. 
She is best known for the chronicle she authored on the family of Saint Bridget, which includes some legends and stories not known from any other sources. Her chronicle influenced later historical and genealogical writers. One story, about "Bengt Lagman", the king's brother who marries a woman of humbler origins, "Sigrid the Beautiful", has been most famously retold in the play Bröllopet på Ulfåsa (1865) by Swedish dramatist, Frans Hedberg (1828-1908) and the music written for the play by August Söderman (1832-1876). Bengt Lagman was the story of Bengt Magnusson (d. 1294), however the story for the most part disagrees with, or is at least not verified by, contemporary sources. 
- "Svenska kyrkans sköna litteratur: eller, Den svensk-kyrkliga litteraturen bedömd med särskildt ..." Margareta is said to have been from Söderköping, Sweden and was probably born in a family of German origin. She participated in the process to get Saint Bridget's daughter Catherine of Vadstena canonized.
- Liedgren, Jan "Margareta Clausdotter" Svenskt biografiskt lexikon
- J. P. Kirsch. "St. Catherine of Sweden". Catholic Encyclopedia (1913). Retrieved April 1, 2020.
- "Brölloppet På Ulfåsa". Stockholm.Albert Bonniers Förlag. Retrieved April 1, 2020.
- "Saint Bridget of Sweden". christianiconograph. Retrieved April 1, 2020.
- Yngve Brilioth, "Bengt Magnusson", Svenskt biografiskt lexikon, vol. 3, p. 194.
- Brilioth, Yngve, "Bengt Magnusson", Svenskt biografiskt lexikon, vol. 3 (1922), p. 193-195.
| Abbess of Vadstena