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People group profile · PG010920

The So of Thailand

The So of Thailand, numbering about 105,000 people, are No Longer Unreached. They are a Katuic Austroasiatic people of northeastern Thailand's Isan region, related to the neighboring Kuy and Bru, inhabiting a Mekong River basin once part of the Lanxang Kingdom's civilization from the 14th to 18th centuries.

They are an indigenous people in the Mon-Khmer people cluster of the Southeast Asian Peoples. Their primary religion is Folk Buddhism, and they primarily speak Sô.

Pray for the SoPrint profile

AI-generated illustration representing the So people
AI-generated illustration, not a photograph. Photo by Google. (2026). Image generated by Gemini 2.5 Flash: So

Fast facts

Country
Thailand
Population
105,000
Affinity group
Asian Pacific Rim Peoples
People cluster
Mon-Khmer
Primary language
Sô (sss)
Primary religion
Folk Buddhism
Strategic Progress Index
No Longer Unreached
Evangelical
2% or Greater but Less than 5%
GSEC
2% or Greater but Less than 5% Evangelical
Lostness priority
Marginally Reached People Group
Region
South-Eastern Asia, Asia

Where they live

Gospel status

The So are No Longer Unreached, which means 2% or more are evangelical Christians. In GSEC terms, this people group is greater than or equal to 2% evangelical.

  • Congregations exist Yes
  • Church planting in the last two years No Churches Planted

Next steps for the So

  • Pray for the churches among this group to grow in faithfulness and maturity
  • Equip believers to reach the unreached peoples around them
  • Send out laborers from this people to the nations

Primary religion

Folk Buddhism · Buddhism

50% adherents

Primary language

Sô · Austroasiatic family

100% speak Sô

Gospel resources in Sô

  • Bible available
  • JESUS Film not available
  • Radio programs not available
  • Gospel recordings available
  • Audio resources available
  • Bible stories not available

Find more at the JESUS Film Project, Bible.com and Faith Comes by Hearing.

Pray for the So

  1. Ephesians 5:8. Pray that those walking in darkness will turn to the light and live as children of light.
  2. Romans 10:14–15. Ask God to send messengers, so that people can hear, believe and call on the name of the Lord.
  3. Matthew 9:37–38. Ask the Lord of the harvest to send out laborers into his harvest field.
  4. 2 Timothy 2:2. Pray for faithful local leaders who will teach others, so that the church multiplies.

Download a prayer guide

So in other countries

The same people (ROP3 109364) is reported in 1 other country.

People groupCountryPopulationStatus
SoLaos182,000Engaged yet Unreached

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