Bishop Jan Cieński was a Roman Catholic clandestine prelate from Ukraine as an Auxiliary bishop of Archdiocese of Lviv and a single Roman Catholic prelate in Ukraine since 30 June 1967 until 16 January 1991, when a Roman Catholic hierarchy was reestablished in Ukraine.
- Occupation
- Catholic priest, Catholic bishop
- Citizenship
- Ukraine
- Born
- January 7, 1905
- Died
- December 26, 1992
