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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

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.

Pray Now!
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Dig Deeper (Religion):

Primary Religion: Protestantism
Religious Affiliation: Christianity

48%
%
Protestantism Adherents

Dig Deeper (Language):

Primary Language: Numbami
Language Family: Austronesian

65%
%
Numbami Speakers

Media Resources in Numbami:

Films:

No entries found for: Numbami(sij). Help build some!

Provided by the Jesus Film Project

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Bible Resources in Numbami:

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% to 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

Be still, and know that I am God. I will be exalted among the nations, I will be exalted in the earth!
readPsalm 46:10

Pray that those who do not yet worship Jesus will be still and know that He is God, that He will be exalted among them and in all the earth.

The God who made the world and everything in it, being Lord of heaven and earth, does not live in temples made by man, nor is he served by human hands, as though he needed anything, since he himself gives to all mankind life and breath and everything.
readActs 17:24-25

Pray that the good news will reach everyone in this people group and that many will come to know and serve the one true God who made the world and everything in it and lives today.

In my Father's house are many rooms. If it were not so, would I have told you that I go to prepare a place for you?
readJohn 14:2-3

Pray that as people place their faith in Christ, they will persevere in hope, remembering that Jesus went to prepare a place for them to be with Him for eternity!

Go on up to a high mountain, O Zion, herald of good news; lift up your voice with strength, O Jerusalem, herald of good news; lift it up, fear not; say to the cities of Judah, "Behold your God!"
readIsaiah 40:9

Pray for God to send and sustain believers to go and herald the good news to the lost here.

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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