Sio in Papua New Guinea

The Sio have only been reported in Papua New Guinea
Population
Main Language
Sio
Largest Religion
Christian
Evangelical
Progress
Progress Gauge

Introduction / History

The Sio are an Austronesian?speaking people on the north coast of the Huon Peninsula in Morobe Province, Papua New Guinea who traditionally lived on a small offshore island before settling in four mainland villages after World War II. Their name means "they put, take up position," chosen in the early 20th century over their older name Sigaba. Early contacts with Germans brought a Lutheran mission station in 1910 and a collective conversion to Christianity in 1919, which led to literacy efforts and church growth among the Sio.


What Are Their Lives Like?

Sio families emphasize gardening, fishing, pottery, and local trade for food and goods. Men and women share labor in subsistence cultivation of yams, fishing, and building canoes and houses, while pottery and net bag weaving remain important crafts. Kinship ties shape community cooperation, and celebrations and work often unite villagers around church and family events, feasts, and gardening cycles. Traditional structures have adapted through schooling and economic activities like copra and cocoa production.


What Are Their Beliefs?

Most Sio identify as Christian, particularly within Protestant and Lutheran traditions, reflecting nearly a century of gospel witness and church life. While ancestral spirits and forest beings were once central to traditional belief, today Christian teaching and worship shape their worldview and daily rhythms. Much life and community direction flow from church activities, Scripture reading, and the moral teachings of Christ.


What Are Their Needs?

The Sio people are open to deeper growth in the gospel and need discipleship that nurtures strong local leadership and mature faith communities. As they engage with modern education and economic pressures, support in biblical literacy, theological training, and contextual discipleship will help them navigate life's challenges with Christ?centered wisdom. Their families can be strengthened through prayers for unity, peace, and fruitfulness as they seek to honor Christ in work, tradition, and community life.


Prayer Items

Pray for the Sio to experience deeper encounters with Jesus Christ.
Pray that local believers will become bold witnesses.
Pray that church leadership will flourish and lead their communities for God's glory.
Pray for families and youth to grow in Christlike character and love.
Pray that economic and social opportunities would be used for God's glory.
Pray for holistic transformation in health, education, and spiritual growth among the Sio people.
Pray for the faithful translation and wide distribution of the Scriptures, evangelism resources, and discipleship materials in the Sio language.


Scripture Prayers for the Sio in Papua New Guinea.


Profile Source:   Joshua Project  

People Name General Sio
People Name in Country Sio
Alternate Names
Population this Country 10,000
Population all Countries 10,000
Total Countries 1
Indigenous Yes
Progress Scale Progress Gauge
Unreached No
Frontier No
GSEC 4  (per PeopleGroups.org)
Pioneer Workers Needed
PeopleID3 14942
ROP3 Code 109318
Country Papua New Guinea
Region Australia and Pacific
Continent Australia
10/40 Window No
Persecution Rank Not ranked
Location in Country Morobe province: Wasu district, mainland near Sio island.   Source:  Ethnologue 2016
Country Papua New Guinea
Region Australia and Pacific
Continent Australia
10/40 Window No
Persecution Rank Not ranked
Location in Country Morobe province: Wasu district, mainland near Sio island..   Source:  Ethnologue 2016

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Primary Religion: Christianity
Major Religion Estimated Percent
Buddhism
0.00 %
Christianity
98.00 %
Ethnic Religions
2.00 %
Hinduism
0.00 %
Islam
0.00 %
Non-Religious
0.00 %
Other / Small
0.00 %
Unknown
0.00 %
Primary Language Sio (10,000 speakers)
Language Code xsi   Ethnologue Listing
Written / Published Yes   ScriptSource Listing
Total Languages 1
Primary Language Sio (10,000 speakers)
Language Code xsi   Ethnologue Listing
Total Languages 1
People Groups Speaking Sio
Photo Source Anonymous 
Profile Source Joshua Project 
Data Sources Data is compiled from various sources. Learn more.