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PEOPLE GROUP PROFILE

The Siboma of Papua New Guinea

The Siboma of Papua New Guinea, numbering approximately 375 people, are No Longer Unreached. They are an indigenous ethnic group of Papua New Guinea. They are an Indigenous people in the New Guinea people cluster of the Pacific Islander Peoples affinity bloc. Their primary language is Numbami and their primary religion is Protestantism.

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

Fast Facts:

Affinity Group: Pacific Islander Peoples
Country: Papua New Guinea
People Cluster: New Guinea
Primary Language(s): Numbami (sij)
Primary Religion(s): Protestantism
Population: 375
Strategic Progress Index (SPI): No Longer Unreached
Global Status of Evangelical Christianity (GSEC): 5% or Greater but Less than 10% Evangelical
People Group ID: PG010445
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Pray for the Siboma of Papua New Guinea

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Dig Deeper (Religion):

Primary Religion: Protestantism
Religious Affiliation: Christianity

48%
%

Dig Deeper (Language):

Primary Language: Numbami
Language Family: Austronesian

65%
%

Media Resources in Numbami:

Films:

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Provided by the Jesus Film Project

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Bible Resources in Numbami:

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Provided by Faith Comes by Hearing

Or check out the Numbami 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% or Greater but Less than 6% 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 Siboma:
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 Siboma 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 Siboma:
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 Siboma 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 Siboma:
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 Siboma of Papua New Guinea

Ah, Lord GOD! It is you who have made the heavens and the earth by your great power and by your outstretched arm! Nothing is too hard for you.
readJerremiah 32:17

Pray that the God who made the heavens and the earth by the power of His outstretched arm, the One who is able to save those who are lost, will show His great love and mercy to those who are walking in darkness.

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.

But he was pierced for our transgressions; he was crushed for our iniquities; upon him was the chastisement that brought us peace, and with his wounds we are healed.
readIsaiah 53:5

Pray that as people place their faith in Christ, they will find comfort and spiritual healing as they remember the wounds of Christ, who understands their suffering because He also walked through suffering on their behalf.

Jesus said to them, "I am the bread of life; whoever comes to me shall not hunger, and whoever believes in me shall never thirst. But I said to you that you have seen me and yet do not believe."
readJohn 6:35-36

Praise God for the things such as bread that He has provided as natural conversation bridges to the gospel. Pray that believers will use any bridges He provides to share the gospel with those who do not yet know the good news.

Siboma Across Countries (ROP3 - 108983) 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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