Western Rus' may refer to:
western regions of Kievan Rus', including: Halychian Rus', an East Slavic medieval state, centered in Halych Volhynian Rus', an East Slavic medieval state, centered in Volhynia Halych-Volhynian Rus', an East Slavic medieval state, uniting Halych and Volhynia Kingdom of Rus', an East Slavic medieval kingdom (Galicia-Volhynia) Turovian Rus', an East Slavic medieval state, centered in Turov Polotskian Rus', an East Slavic medieval state, centered in Polotsk
several Slavic historical regions, including: White Rus', an East Slavic historical region Black Rus', an East Slavic historical region Red Rus', an East Slavic historical region Carpathian Rus', a historical region inhabited mostly by Rusyns (Rusynia)
See also Rus' (disambiguation) Principality of Rus' (disambiguation) Grand Principality of Rus' (disambiguation) Ruthenia (disambiguation) Russia (disambiguation)