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PEOPLE GROUP PROFILE

The Sinaki of Papua New Guinea

The Sinaki of Papua New Guinea, numbering approximately 1,500 people, are No Longer Unreached. They are an indigenous ethnic group of Papua New Guinea; a dialect subgroup of Suau (swp). They are an Indigenous people in the New Guinea people cluster of the Pacific Islander Peoples affinity bloc. Their primary language is Suau and their primary religion is Protestantism.

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

Fast Facts:

Affinity Group: Pacific Islander Peoples
Country: Papua New Guinea
People Cluster: New Guinea
Primary Language(s): Suau (swp)
Primary Religion(s): Protestantism
Population: 1,500
Strategic Progress Index (SPI): No Longer Unreached
Global Status of Evangelical Christianity (GSEC): 5% or Greater but Less than 10% Evangelical
People Group ID: PG010457
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Pray for the Sinaki 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

43%
%
Protestantism Adherents

Dig Deeper (Language):

Primary Language: Suau
Language Family: Austronesian

100%
%
Suau Speakers

Media Resources in Suau:

Films:

Provided by the Jesus Film Project

View all resources

Bible Resources in Suau:

Provided by Faith Comes by Hearing

Or check out the Suau 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): 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 Sinaki:
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 Sinaki 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 Sinaki:
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 Sinaki 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 Sinaki:
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 Sinaki 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.

So his fame spread throughout all Syria, and they brought him all the sick, those afflicted with various diseases and pains, those oppressed by demons, those having seizures, and paralytics, and he healed them
readMatthew 4:24

Pray that the truth about the Lord will spread throughout the land so that many will have an opportunity to receive the good news and put their faith in Him.

The point is this: whoever sows sparingly will also reap sparingly, and whoever sows bountifully will also reap bountifully.
read2 Corinthians 9:6

Pray that as people place their faith in Christ, they will remember the principle of sowing and reaping, and be generous in their giving and serving, knowing that they will reap a generous harvest.

For so the Lord has commanded us, saying, “‘I have made you a light for the Gentiles, that you may bring salvation to the ends of the earth.’”
readActs 13:47

Pray that as people come to faith, they will follow the Lord's leading to go to their neighbors and share the treasure they found in Christ.

Sinaki Across Countries (ROP3 - 109024) 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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