Constance (Polish: Konstancja; died 1351) was a Polish princess from the House of Piast and sovereign Duchess of Wodzisław Śląski from 1324 until her death. Her name appears twice in contemporary sources: firstly, in a letter of Pope John XXII dated 22 September 1321, where she is named "Duchess of Racibórz", and secondly in the Chronicle of Racibórz, who give her the title of "Duchess of Wodzisław" (księżną wodzisławską) and mentions her death in 1351. None of these sources showed Constance's parentage. Historians and sources are agreed that she was a member of the Piast dynasty; however, the difficult of establishing who was her father, caused two theories to emerge about her origins.