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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 described as an indigenous ethnic group of Papua New Guinea They are an Indigenous people, with Siboma as their ethnic/kinship group and are in the New Guinea people cluster of the Pacific Islander Peoples. Their primary religion is Protestantism. They primarily speak Numbami.

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%
%

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% 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

"...And some fell into good soil and grew and yielded a hundredfold." As he said these things, he called out, "He who has ears to hear, let him hear."
readLuke 8:8

Pray that the seeds of truth will take root in the hearts of those who are far from Jesus and that He will lead them from darkness to light.

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.

Remember the wondrous works that he has done, his miracles, and the judgments he uttered.
readPsalm 105:5

Pray that as people place their faith in Christ, they will rejoice as they remember His wonders, miracles, and perfect judgements.

For we do not wrestle against flesh and blood, but against the rulers, against the authorities, against the cosmic powers over this present darkness, against the spiritual forces of evil in the heavenly places.
readEphesians 6:12

Ask God to give those He sends to cross cultures the discernment they need to recognize the spiritual battle they are fighting. Pray God will protect their faith as they abide in Him.

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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