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PEOPLE GROUP PROFILE

The Banyumasan of Indonesia

The Banyumasan of Indonesia, numbering approximately 9,200,000 people, are Engaged yet Unreached. They are described as an indigenous community of Indonesia; a dialect subgroup of Javanese (jav) and can also be known as Java Mendhoan, Java Banyumasan, Java Serayu. They are an Indigenous people, with Java / Jawa as their ethnic/kinship group and are in the Jawa people cluster of the Malay Peoples. Their primary religion is Sunni Islam. They primarily speak Javanese.

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

Fast Facts:

Affinity Group: Malay Peoples
Country: Indonesia
People Cluster: Jawa
Primary Language(s): Javanese (jav)
Primary Religion(s): Sunni Islam
Population: 9,200,000
Strategic Progress Index (SPI): Engaged yet Unreached
Global Status of Evangelical Christianity (GSEC): Less than 2% Evangelical, Dispersed CP Activity
People Group ID: PG022426
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Pray for the Banyumasan of Indonesia

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: Sunni Islam
Religious Affiliation: Islam

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Dig Deeper (Language):

Primary Language: Javanese
Language Family: Austronesian

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Media Resources in Javanese:

Films:

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Provided by the Jesus Film Project

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Bible Resources in Javanese:

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Provided by Faith Comes by Hearing

Or check out the Javanese 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: 1), 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): Expanding Unreached People Group, (LPI: 2), 0.5% to 2% Evangelical.
Global Status of Evangelical Christianity (GSEC): Less than 2% Evangelical, Dispersed CP Activity (GSEC: 3), this people group is less than 2% evangelical but there has been dispersed church planting among them within the past two years

Next steps for the Banyumasan:
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 Banyumasan 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 Banyumasan:
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 Banyumasan 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 Banyumasan:
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 Banyumasan of Indonesia

And there is salvation in no one else, for there is no other name under heaven given among men by which we must be saved.
readActs 4:12

Pray that those walking in darkness among them will come to know the name by which they must be saved, and call upon Him in faith.

Behold, children are a heritage from the LORD, the fruit of the womb a reward.
readPsalm 127:3

Pray that God will bless this generation of children, that they will come to know Jesus early in life and follow Him always.

The LORD make his face to shine upon you and be gracious to you.
readNumbers 6:25

Pray that as people place their faith in Christ, they will remember that He has given them His favor and His presence.

O LORD, our Lord, how majestic is your name in all the earth! You have set your glory above the heavens.
readPsalm 8:1

Pray that God will raise up people who love Him and are able and willing to go to and share the hope of the gospel with those who don't know it. Pray that everyone will see His name as majestic in all the earth!

Java Banyumasan Across Countries (ROP3 - 104218) 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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