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PEOPLE GROUP PROFILE

The Diodio of Papua New Guinea

The Diodio of Papua New Guinea, numbering approximately 4,300 people, are No Longer Unreached. They are an indigenous ethnic group of Papua New Guinea. They mostly adhere to Protestantism and West Goodenough is their primary language.

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

Fast Facts:

Affinity Group: Pacific Islander Peoples
Country: Papua New Guinea
People Cluster: New Guinea
Primary Language(s): West Goodenough (ddi)
Primary Religion(s): Protestantism
Population: 4,300
Strategic Progress Index (SPI): No Longer Unreached
Global Status of Evangelical Christianity (GSEC): 10% or Greater Evangelical
People Group ID: PG009863
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Pray for the Diodio 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.

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Dig Deeper (Religion):

Primary Religion: Protestantism
Religious Affiliation: Christianity

45%
%
Protestantism Adherents

Dig Deeper (Language):

Primary Language: West Goodenough
Language Family: Austronesian

100%
%
Goodenough, West Speakers

Media Resources in West Goodenough:

Films:

No film resources are listed for this language.

Provided by the Jesus Film Project

View all resources

Bible Resources in West Goodenough:

No Bible resources are listed for this language.

Provided by Faith Comes by Hearing

Or check out the West Goodenough bible at Bible.com

Linked from YouVersion

View all resources

SPI: No longer Unreached

The Diodio 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 Diodio:
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 Diodio of Papua New Guinea

I am the LORD; that is my name; my glory I give to no other, nor my praise to carved idols.
readIsaiah 42:8

Pray that lost people will turn from worthless idols to worship the one true God, recognizing that He alone is worthy of all glory and praise.

Now therefore, O kings, be wise; be warned, O rulers of the earth. Serve the LORD with fear, and rejoice with trembling.
readPsalm 2:10-11

Pray for the rulers and authorities here to seek the Lord and serve Him only. Pray that the people they lead will be amazed by the work of God in their lives.

And he said to them, “You have a fine way of rejecting the commandment of God in order to establish your tradition!"
readMark 7:9

Pray that as men, women, boys, and girls place their faith in Christ, they will let go of any traditions that do not honor Him.

Finally, brothers, pray for us, that the word of the Lord may speed ahead and be honored, as happened among you, and that we may be delivered from wicked and evil men. For not all have faith. But the Lord is faithful. He will establish you and guard you against the evil one.
read2 Thessalonians 3:1-3

Pray that the Word of God will spread throughout this people group and be honored. Ask God to establish His people and guard them from the evil one, testifying to this whole people group of His great faithfulness.

Diodio Across Countries (ROP3 - 102623) reported in the following countries:

Strategic Progress Index
All

1 people group

PhotoPeople Group IDNameCountry ▼PopulationStrategic Progress IndexLanguageReligion
DiodioPG009863DiodioPapua New Guinea4,300No Longer UnreachedWest GoodenoughProtestantism

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 Data Standards section.

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