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PEOPLE GROUP PROFILE

The So of Thailand

The So of Thailand, numbering approximately 105,000 people, are No Longer Unreached. They are described as an indigenous community of Thailand They are an Indigenous people, with So Makon as their ethnic/kinship group and are in the Mon-Khmer people cluster of the Southeast Asian Peoples. Their primary religion is Folk Buddhism. They primarily speak So (Laos).

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

Fast Facts:

Affinity Group: Southeast Asian Peoples
Country: Thailand
People Cluster: Mon-Khmer
Primary Language(s): So (Laos) (sss)
Primary Religion(s): Folk Buddhism
Population: 105,000
Strategic Progress Index (SPI): No Longer Unreached
Global Status of Evangelical Christianity (GSEC): 2% or Greater but Less than 5% Evangelical
People Group ID: PG010920
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Pray for the So 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.

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Dig Deeper (Religion):

Primary Religion: Folk Buddhism
Religious Affiliation: Buddhism

50%
%
Folk Buddhism Adherents

Dig Deeper (Language):

Primary Language: So (Laos)
Language Family: Austroasiatic

100%
%
So (Laos) Speakers

Media Resources in So (Laos):

Films:

No entries found for: So (Laos)(sss). Help build some!

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Bible Resources in So (Laos):

Provided by Faith Comes by Hearing

Or check out the So (Laos) bible at Bible.com

Linked from YouVersion

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Explore Lostness and Next Steps

Unengaged and Unreached

Strategic Priority Index (SPI): Unengaged and Unreached (SPI: 2), 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): Marginally Reached People Group, (LPI: 4), 3% to 6% Evangelical.
Global Status of Evangelical Christianity (GSEC): 2% or Greater but Less than 5% Evangelical (GSEC: 4), this people group is greater than or equal to 2% evangelical

Next steps for the So:
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 So 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 So:
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 So 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 So:
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 So of Thailand

And when you fast, do not look gloomy like the hypocrites, for they disfigure their faces that their fasting may be seen by others. Truly, I say to you, they have received their reward.
readMatthew 6:16

Pray that those who live to please men and not God will turn from the emptiness of seeking approval from others and find true satisfaction in the treasure of a personal relationship with God.

Crispus, the ruler of the synagogue, believed in the Lord, together with his entire household. And many of the Corinthians hearing Paul believed and were baptized.
readActs 18:8

Pray that rulers and leaders will access the gospel, respond in faith, and be baptized, uniting with Christ and His Church, and influence others to follow Him.

And now, Lord, look upon their threats and grant to your servants to continue to speak your word with all boldness.
readActs 4:29

Pray that as people place their faith in Christ and face rejection by unbelievers in their communities, God will give them discernment, boldness, and encouragement to speak His Word.

Say among the nations, “The LORD reigns! Yes, the world is established; it shall never be moved; he will judge the peoples with equity.”
readPsalm 96:10

Pray for God to put in the hearts of believers to go to the lost and testify about the Lord who reigns.

So Across Countries (ROP3 - 109364) 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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