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Amharic - አማርኛ | Arabic - عربي
Bengali - বাংলা | Chinese (Simplified) - 中文（简体）
Chinese (Traditional) - 中文（繁體) | French - Français
German - Deutsch | Gujarati - ગુજરાતી
Hindi - हिन्दी | Indonesian - Bahasa Indonesia
Korean - 한국어 | Nepali - नेपाली
Portugese - Português | Russian - Русский
Spanish - Espanol | Tagalong / Filipino
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PEOPLE GROUP PROFILE

The Siang of Indonesia

The Siang of Indonesia, numbering approximately 110,000 people, are No Longer Unreached. They are an ethnolinguistic community of Indonesia. They are an Indigenous people in the Barito of Kalimantan people cluster of the Malay Peoples affinity bloc. Their primary language is Siang and their primary religion is Animism.

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

Fast Facts:

Affinity Group: Malay Peoples
Country: Indonesia
People Cluster: Barito of Kalimantan
Primary Language(s): Siang (sya)
Primary Religion(s): Animism
Population: 110,000
Strategic Progress Index (SPI): No Longer Unreached
Global Status of Evangelical Christianity (GSEC): 5% or Greater but Less than 10% Evangelical
People Group ID: PG022591
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Pray for the Siang of Indonesia

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: Animism
Religious Affiliation: Ethnoreligion

98%
%
Animism Adherents

Dig Deeper (Language):

Primary Language: Siang
Language Family: Austronesian

100%
%
Siang Speakers

Media Resources in Siang:

Films:

Provided by the Jesus Film Project

View all resources

Bible Resources in Siang:

Provided by Faith Comes by Hearing

Or check out the Siang bible at Bible.com

Linked from YouVersion

View all resources

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): Moderately Reached People Group, (LPI: 5), 6% to 20% Evangelical.
Global Status of Evangelical Christianity (GSEC): 5% or Greater but Less than 10% Evangelical (GSEC: 5), this people group is greater than or equal to 5% evangelical

Next steps for the Siang:
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 Siang 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 Siang:
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 Siang 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 Siang:
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 Siang of Indonesia

Jesus said to her, "Everyone who drinks of this water will be thirsty again, but whoever drinks of the water that I will give him will never be thirsty again. The water that I will give him will become in him a spring of water welling up to eternal life"
readJohn 4:13-14

Pray that those who don't know Jesus will drink of the living water that only Christ can provide and never thirst again.

For all have sinned and fall short of the glory of God, and are justified by his grace as a gift, through the redemption that is in Christ Jesus.
readRomans 3:23

Pray that the gospel will advance and many will acknowledge that all have sinned, fall short of God's glory, and need a Savior to reconcile them to God.

Your words were found, and I ate them, and your words became to me a joy and the delight of my heart, for I am called by your name, O LORD, God of host.
readJeremiah 15:16

Pray that as people place their faith in Christ, they will find joy and delight in the Word of the Lord.

Is it not to share your bread with the hungry and bring the homeless poor into your house; when you see the naked, to cover him, and not to hide yourself from your own flesh?
readIsaiah 58:7

As believers cross cultures to share the good news of Christ, pray that God will sustain them and grow their faith as He gives them the compassion necessary to minister well to those in need.

Siang Across Countries (ROP3 - 108981) 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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