In Christianity, an unreached people group is an ethnic group without an indigenous, self-propagating Christian church movement. Any ethnic or ethnolinguistic nation without enough Christians to evangelize the rest of the nation is an "unreached people group". It is a missiological term used by Evangelical Protestants. 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."
'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, Including nations where other forms of Christianity are prevalent such as Western Catholicism, Eastern Christianity or Judaism.
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Large amounts of most of the countries in what is known as the 10/40 window are known to be 'unreached people groups'. This list of countries is from His Feet International Ministries.
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