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People group profile · PG050321

The Tumbatu of Tanzania

The Tumbatu of Tanzania, numbering about 324,000 people, are Unengaged and Unreached. They are one of the subgroups of the Shirazi (108953) people of the island of Zanzibar, off the coast of northeastern Tanzania.

They are an indigenous people in the Bantu, Swahili people cluster of the Sub-Saharan African Peoples. Their primary religion is Sunni Islam, and they primarily speak Swahili (individual language).

Pray for the TumbatuPrint profile

AI-generated illustration representing the Tumbatu people
AI-generated illustration, not a photograph. Photo by Google. (2026). Image generated by Gemini 3.1 Flash-Lite: Tumbatu

Fast facts

Country
Tanzania
Population
324,000
Affinity group
Sub-Saharan African Peoples
People cluster
Bantu, Swahili
Primary language
Swahili (individual language) (swh)
Primary religion
Sunni Islam
Strategic Progress Index
Unengaged and Unreached
Evangelical
No Known Evangelicals
GSEC
Less than 2% Evangelical, No Recent CP Activity
Lostness priority
Frontier Unreached People Group
Region
Eastern Africa, Africa
Location
Lindi, Mtwara, Pemba North, Pemba South, Pwani, Tanga, Unguja North, Unguja South, and Unguja Urban-West regions

Where they live

Gospel status

The Tumbatu are Unengaged and Unreached, which means fewer than 2% are evangelical Christians, and there has been no reported church planting activity in the past two years. In GSEC terms, this people group is less than 2% evangelical, some evangelical resources are available, but there has been no active church planting among them within the past two years.

  • Congregations exist No
  • Church planting in the last two years No Churches Planted

Next steps for the Tumbatu

  • Pray that God would send workers to this people group
  • Begin sowing the gospel and seek out people of peace
  • Plant the first churches consistent with evangelical faith and practice

Primary religion

Sunni Islam · Islam

100% adherents

Primary language

Swahili (individual language) · Atlantic-Congo family

100% speak Swahili (individual language)

Gospel resources in Swahili (individual language)

  • Bible available, published 2017
  • JESUS Film available
  • Radio programs available
  • Gospel recordings available
  • Audio resources available
  • Bible stories not available

Films

Bibles

Find more at the JESUS Film Project, Bible.com and Faith Comes by Hearing.

Pray for the Tumbatu

  1. John 17:3. Pray that many will come to know the only true God, and Jesus Christ whom he has sent.
  2. Psalm 27:1. Pray that new believers will be strengthened in the face of persecution, with the Lord as their stronghold.
  3. Romans 12:4–5. Pray that believers from many cultures will work together as one body so that the church is built up.
  4. Revelation 7:9. Pray for the day when people from this group stand before the throne with every nation, tribe, people and language.

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