The Isaan of Thailand

The Isaan of Thailand, numbering approximately 18,610,000 people, are Engaged yet Unreached. They are an ethnolinguistic group native to Northeastern Thailand. They are primarily ethnic Lao, and their identity reflects a blend of Lao heritage, Thai national integration, and regional distinctiveness. They are an Indigenous people, in the Thai people cluster of the Southeast Asian Peoples affinity bloc. Their primary religion is Buddhism - Theravada. They primarily speak Thai, Northeastern.

Photo by Google. (2026). Image generated by Gemini 2.5 Flash: Isaan

Fast Facts:

Affinity Group: Asian Pacific Rim Peoples
Country: Thailand
People Cluster: Thai
Primary Language(s): Thai, Northeastern (tts)
Primary Religion(s): Buddhism - Theravada
Population: 18,610,000
Strategic Progress Index (SPI): Engaged yet Unreached
Global Status of Evangelical Christianity (GSEC): Less than 2% Evangelical, No Active CP Activity
People Group ID: PG010862
View on Joshua Project

Pray for the Isaan of Thailand

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: Buddhism - Theravada
Religious Affiliation: Buddhism

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Dig Deeper (Language):

Primary Language: Thai, Northeastern
Language Family: Tai-Kadai

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Media Resources in Thai, Northeastern:

Films:

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Bible Resources in Thai, Northeastern:

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Or check out the Thai, Northeastern bible resources at Bible.com

Linked from YouVersion

Next steps for the Isaan

The Isaan are Unengaged and Unreached, 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.

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

Next steps for the Isaan

The Isaan 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.

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

Next steps for the Isaan

The Isaan 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.

Empower local believers to begin praying for their own people
Continue gospel seed sowing and church planting among this group
Encourage local leaders to being leading church planting strategy and looking for Unreached and Unengaged groups nearby

Pray specifically for the Isaan of Thailand

I acknowledged my sin to you, and I did not cover my iniquity; I said, 'I will confess my transgressions to the Lord,' and you forgave the iniquity of my sin.
readPsalm 32:5

Pray those who are lost will realize their sin, confess their iniquity, and grow in their understanding of salvation through faith in Christ alone.

Greet also the church in their house. Greet my beloved Epaenetus, who was the first convert to Christ in Asia."
readRomans 16:5

Pray for houses to be meeting places for Christians and that God will advance the gospel and grow His Church through natural familial and community relationships.

For you are great and do wondrous things; you alone are God. Teach me your way, O Lord, that I may walk in your truth; unite my heart to fear your name.
readPsalm 86:10-11

Pray that as people place their faith in Christ, they will trust in the Lord with all their heart, knowing that He is the one true God and will teach them His ways.

Therefore take up the whole armor of God, that you may be able to withstand in the evil day, and having done all, to stand firm.
readEphesians 6:13

Pray that God will send believers to the lost of this people group and that, as they share the gospel, they will take up the whole armor of God so that they can stand firm when trials come.

Thai, Northeastern (ROP3 - 109994) 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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