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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

For all have sinned and fall short of the glory of God.
readRomans 3:23

Pray that those who live in fear, guilt and discontentment because of sin will see their need for change, hear, and receive the good news of freedom from sin through Christ.

For the word of God is living and active, sharper than any two-edged sword, piercing to the division of soul and of spirit, of joints and of marrow, and discerning the thoughts and intentions of the heart.
readHebrews 4:12

Pray for God's Word to be accessible to everyone in this people group in a way they will resonate with so that many will engage with it, receive it, and share it with others.

But you said, "I will surely do you good, and make your offspring as the sand of the sea, which cannot be numbered for multitude."
readGenesis 32:12

Pray that as people place their faith in Christ, they will experience God's presence and protection even in difficult circumstances, knowing that He will make them fruitful.

Come, bless the LORD, all you servants of the LORD, who stand by night in the house of the LORD!
readPsalm 134:1

Pray that God will raise up believers among them who are in awe of Him and that, in service to Him, they will share the gospel with others so that they too may bless the Lord!

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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