Monoethnicity
![A Japanese train station in 1990. It is a common belief in and about Japan that the entire country is monoethnic, but there are many ethnic minorities in Japan, such as Koreans, Ainus, Hayatos and Ryukyuans.](/Images/godic/202501/28/Tsurumi_Ryokuchi_Station_Scan10018_199009011444.JPG")
Monoethnicity is the existence of a single ethnic group in a given region or country. It is the opposite of polyethnicity. The use of the concept of monoethnicity has been criticized for being discriminatory and preventing diversity from being recognized.