Principality of Rus' or Duchy of Rus' may refer to:
Principality of Halychian Rus', an East Slavic medieval state, centered in Halych Principality of Volhynian Rus', an East Slavic medieval state, centered in Volhynia Principality of Halych-Volhynian Rus', an East Slavic medieval state, uniting Halych and Volhynia Principality of Rus' (1658), a proposed state in Eastern Europe Duchy of Rus' (voivodeship), a province of the early modern Kingdom of Poland (from 15th to 18th century)
See also Grand Principality of Rus' (disambiguation) Rus (disambiguation) Russia (disambiguation) Ruthenia (disambiguation)