Korean (한국어 / 조선말) is the language most spoken in. South Korea and North Korea Which is used as official language And the ethnic Koreans living in China, generally speaking (in Yan Pian County Jue Lin, which borders with South Korea) around the world who speak Korean, 78 million people, including people. in the former Soviet Union, US, Canada, Japan and Brazil recently. It is spoken in the Philippines by the Korean language family is generally accepted. But most often considered as independent. Some linguists have grouped them in. Altai language family as well.