The Third of Us Alliance

Mission agencies,aligned around athird of humanity

A coalition of mission agencies committed to the roughly three billion people who still have no access to the Gospel. The Alliance fuels the public A Third of Us movement and coordinates strategy among the agencies serving the unreached.

Photos: IMB

Believers gathered at a river for baptism
Hands raised in a crowd
A man reading in a place of worship
Scripture study in a local language
Two boys on a village street
Villagers carrying loads at dusk
A missionary greeting a mother and child
A packed church gathering in winter
A woman praying at a shrine
A worker in conversation under a shelter
Local leaders studying Scripture together
A house church meeting on the floor
What the Alliance is

What we doand why now

The coalition's role behind the scenes, and why the moment demands it.

01

What we are

A coalition of mission agencies committed to seeing the third of humanity still without Gospel access reached. The Alliance does the unglamorous work behind the scenes: data sharing, strategy alignment, joint research, and shared advocacy. The public expression is A Third of Us — the movement Gen Z and Millennial Christians know.

02

Why now

There has never been a more urgent or more possible moment for unreached-people-group focus. AI translation tools, indigenous movements, and a generation hungry for purpose are converging. The Alliance exists so the agencies serving this work do it together rather than in parallel.

Member commitments

Three pillars bind the Alliance together

Coordinated action across the coalition, not parallel effort.

Alignment

Strategy alignment

Quarterly convenings keep priorities clear and duplication at bay.

Align
Intelligence

Data sharing

Member agencies contribute field-level data on unreached engagement.

Share
Movement

Public movement support

Members back A Third of Us as the public face and align messaging.

Support
Member agencies

For mission agencies

If your organization works among the unreached and would benefit from coalition strategy alignment, talk to us about joining.

For churches and individuals

The public A Third of Us movement is where individuals and churches engage. The Alliance is the agency wing.

Visit A Third of Us