The Koreans of Japan

The Koreans of Japan, numbering approximately 796,000 people, are Engaged yet Unreached. They are an East Asian ethnic group native to the Korean Peninsula, today forming the dominant populations of South Korea and North Korea, with a large global diaspora. They are an Diaspora people in the Korean people cluster of the East Asian Peoples affinity bloc. Their primary language is Korean and their primary religion is Atheism.

Photo by Google. (2026). Image generated by Gemini 3.1 Flash: Korean

Fast Facts:

Affinity Group: East Asian Peoples
Country: Japan
People Cluster: Korean
Primary Language(s): Korean (kor)
Primary Religion(s): Atheism
Population: 796,000
Strategic Progress Index (SPI): Engaged yet Unreached
Global Status of Evangelical Christianity (GSEC): Less than 2% Evangelical, No Recent CP Activity
People Group ID: PG007572
View on Joshua Project

Pray for the Koreans of Japan

Join others around the world in praying for the lost to be saved, the gospel to advance, the global Church to grow, and for laborers to be sent out and sustained in the harvest.

Dig Deeper (Religion):

Primary Religion: Atheism
Religious Affiliation: Unaffiliated

54%
%
Atheism Adherents

Dig Deeper (Language):

Primary Language: Korean
Language Family: Koreanic

100%
%
Korean Speakers

Bible Resources in Korean:

Or check out the Korean bible at Bible.com

Linked from YouVersion

Explore Lostness and Next Steps

Unengaged and Unreached

Strategic Priority Index (SPI): Unengaged and Unreached (SPI: 1), which means there are less than 2% evangelical Christian populations among which there are no known efforts focused on establishing self-sustaining churches consistent with evangelical faith and practice.
Lostness Priority Index (LPI): Expanding Unreached People Group, (LPI: 2), 0.5% or Greater but Less than 2% Evangelical.
Global Status of Evangelical Christianity (GSEC): Less than 2% Evangelical, No Recent CP Activity (GSEC: 1), this people group is less than 2% evangelical, some evangelical resources are available, but there has been no active church planting among them within the past two years

Next steps for the Koreans:
Begin signifcant prayer and fasting for this group
Send cross-cultural teams to discover and research this people group
Begin gospel seed sowing and church planting among this group

SPI: Unreached yet Engaged

The Koreans are Engaged yet Unreached, which means there are less than 2% evangelical Christian populations but there are sustained efforts at establishing self-sustaining churches consistent with evangelical faith and practice.

Next steps for the Koreans:
Continue prayer and fasting for this group
Continue gospel seed sowing and church planting among this group
Begin training up local leaders to lead and develop strategies to reach their own people

SPI: No longer Unreached

The Koreans are No Longer Unreached, which means there are more than 2% evangelical Christian populations and there are churches consistent with evangelical faith and practice. There is still more to be done among them.

Next steps for the Koreans:
Empower local believers to begin praying for their own people
Continue gospel seed sowing and church planting
Encourage local leaders to being leading church planting strategy and looking for Unreached and Unengaged groups nearby

Pray specifically for the Koreans of Japan

And the people of Israel went into the midst of the sea on dry ground, the waters being a wall to them on their right hand and on their left.
readExodus 14:22

Pray that the God who split the sea so that the Israelites might pass through would do another great work among these people, softening the hearts of those who remain lost to the good news and saving them from their sins.

The people dwelling in darkness have seen a great light, and for those dwelling in the region and shadow of death, on them a light has dawned.
readMatthew 4:16

Pray that those who dwell in darkness and live in the land of the shadow of death may be drawn out of darkness into His marvelous light.

For as I passed along and observed the objects of your worship, I found also an altar with this inscription: ‘To the unknown god.’ What therefore you worship as unknown, this I proclaim to you.
readActs 17:23

Pray that as people place their faith in Christ, they will have a deep desire to know God more fully and to make Him known in creative ways to others who are still searching for truth.

I praise you, for I am fearfully and wonderfully made. Wonderful are your works; my soul knows it very well.
readPsalm 139:14

Praise God for His creativity and power, and pray that He will raise up men and women from among them who are in awe of all He has done and want to go share the hope of Christ with others.

Korean Across Countries (ROP3 - 105225) reported in the following countries:

To download a comprehensive people group list in spreadsheet form, visit our Research Data page.

Peoplegroups.org relies on updates from the field and other organizations for much of our data, so if you have any updates, please contact us. We use various international naming standards. For a list of these standards and fields, visit our Definitions page.

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