Elżbieta Łucja Sieniawska (1573-1624), was a Polish magnate. She was the founder of the Benedictine nunnery of Sandomierz (1614) and the Jesuit church at Lviv (1607).
- Citizenship
- Polish–Lithuanian Commonwealth
- Born
- 1573, December 13, 1573
- Died
- 1624, September 20, 1624