Józef Eustachy Szembek was a Polish nobleman who was Bishop of Płock from 1753.
- Occupation
- Catholic priest, Catholic deacon, Catholic bishop
- Position held
- Bishop of the Roman Catholic Diocese of Płock, Roman Catholic Bishop of Chełm, Commendatory abbot
- Citizenship
- Polish–Lithuanian Commonwealth
- Born
- May 1697
- Died
- April 1, 1758