Beskid Żywiecko-Kysucki (513.56) - a mountain range, the western part of the Beskid Żywiecki, including the Wielka Racza Group, the Oszusa Group and a part of the Pilska Group on the section from the Glinka Pass to Krawców Wierch. Separated as a mesoregion belonging to the Western Beskids as part of the regionalization of the Western Carpathians from 2014 by Jarosław Balon and Miłosz Jodłowski, geographers from the Jagiellonian University, and then as a mesoregion in the physical and geographic regionalization of Poland from 2018 carried out by an inter-university team of scientists led by Jerzy Solon.