In Christianity, an unreached people group refers to an ethnic group without an indigenous, self-propagating Christian church movement.
[1] Any ethnic or ethnolinguistic nation without enough Christians to evangelize the rest of the nation is an "unreached people group".
[3][4] The Lausanne Committee for World Evangelization defines a people group as "the largest group within which the gospel can spread as a church planting movement without encountering barriers of understanding or acceptance.
"[5][6] "Nation" is sometimes used interchangeably for "people group".
The term is sometimes applied to ethnic groups in which less than 2% of the population is Evangelical Protestant Christian,[7][8] Including nations where other forms of Christianity are prevalent such as Western Catholicism, Eastern Christianity or Lutheranism.