Polska Roma are the largest and one of the oldest ethnolinguistic sub group of Romani people living in Poland. Some Polska Roma also live in North America, Switzerland, Sweden, Great Britain and countries of the European Union. The term "Polska Roma" is both an ethnonym of the group and a term used in the academic literature. As such it is distinct from the terms "Polish Roma" or "Roma in Poland" which denote the broader Roma population in Poland. Polish ethnographer Jerzy Ficowski, writing in the 1950s and 60s used the term "Polish Lowlander Gypsies" (Polish: Polscy Cyganie Nizinni) to refer to the same group, though this terminology is no longer in widespread use.