The Deaf Koreans of South Korea, numbering approximately 553,000 people, are Engaged yet Unreached. They are described as a community of individuals who are culturally Deaf and actively participate in Deaf culture, often using sign language as their primary means of communication They are an Indigenous people, with Deaf as their ethnic/kinship group and are in the Deaf people cluster of the Deaf Peoples. Their primary religion is Mahayana Buddhism. They primarily speak Korean Sign Language.