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PEOPLE GROUP PROFILE

The Grass Koiari of Papua New Guinea

The Grass Koiari of Papua New Guinea, numbering approximately 3,700 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 religion is Christianity - Protestantism. They primarily speak Koiari.

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

Fast Facts:

Affinity Group: Asian Pacific Rim Peoples
Country: Papua New Guinea
People Cluster: New Guinea
Primary Language(s): Koiari (kbk)
Primary Religion(s): Christianity - Protestantism
Population: 3,700
Strategic Progress Index (SPI): No Longer Unreached
Global Status of Evangelical Christianity (GSEC): 5% or Greater but Less than 10% Evangelical
People Group ID: PG020266
View on Joshua Project

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Pray for the Grass Koiari of Papua New Guinea

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Dig Deeper (Religion):

Primary Religion: Christianity - Protestantism
Religious Affiliation: Christianity

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Dig Deeper (Language):

Primary Language: Koiari
Language Family: Koiarian

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Media Resources in Koiari:

Films:

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Provided by the Jesus Film Project

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Bible Resources in Koiari:

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Provided by Faith Comes by Hearing

Or check out the Koiari bible resources at Bible.com

Linked from YouVersion

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Next steps for the Grass Koiari

The Grass Koiari are Unengaged and Unreached, 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.

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

Next steps for the Grass Koiari

The Grass Koiari 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.

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

Next steps for the Grass Koiari

The Grass Koiari 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.

Empower local believers to begin praying for their own people
Continue gospel seed sowing and church planting among this group
Encourage local leaders to being leading church planting strategy and looking for Unreached and Unengaged groups nearby

Pray specifically for the Grass Koiari of Papua New Guinea

Hear, O LORD, and be merciful to me! O LORD, be my helper!
readPsalm 30:10

Pray that people in the depths of despair and suffering and living outside of relationship with Christ will cry out to the Lord and find help, peace, and joy in Him.

Behold, you shall call a nation that you do not know, and a nation that did not know you shall run to you, because of the LORD your God, and of the Holy One of Israel, for he has glorified you.
readIsaiah 55:5

Pray that those who do not know God will access the gospel, run to Him, and discover that He is the one their souls have been longing for.

Not neglecting to meet together, as is the habit of some, but encouraging one another, and all the more as you see the Day drawing near.
readHebrews 10:25

Pray that as people place their faith in Christ, they will not neglect meeting together but encourage one another as they see the Day approaching.

But when one turns to the Lord, the veil is removed.
read2 Corinthians 3:16

Give thanks to God for believers around the world who are willing to cross cultures to share the gospel with those who are perishing. Pray that He will work through their witness to draw many to turn to Him.

Grass Koiari (ROP3 - 103473) 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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