Halychian
Halychian may refer to:
- something or someone related to the city of Halych, in modern Ukraine
 - Halychian Principality, an East Slavic medieval state, centered in Halych
 - Halychian-Volhynian Principality, an East Slavic medieval state, uniting Halych and Volhynia
 - Halychian Wars, series of medieval wars in the region of Halych
 - Halychian Metropolitanate, an Eastern Orthodox Metropolitanate of Halych
 - Ukrainian Catholic Major Archeparchy of Kyiv–Galicia, a diocese of the Ukrainian Byzantine Catholic Church
 - Halychian Land (ziemia), a province of the early modern Kingdom of Poland
 - Halych Raion, former administrative region, centered in the city of Halych
 - Halychian-Volhynian Chronicle, medieval East Slavic chronicle