| Photo | People Group | Country | Population | Indigenous | Primary Language | Primary Religion | Progress Scale | % Evangelical Range | % Christian Adh Range | 
|---|---|---|---|---|---|---|---|---|---|
|   | Onank, Northern Watut | Papua New Guinea | 1,400 | ● | Kodut, North | Christianity | 5   | 10-50% ● | 50-100% ● | 
|   | One, Inebu | Papua New Guinea | 2,800 | ● | One, Inebu | Christianity | 5   | 10-50% ● | 50-100% ● | 
|   | One, Kabore | Papua New Guinea | 600 | ● | One, Kabore | Christianity | 5   | 10-50% ● | 50-100% ● | 
|   | One, Kwamtim | Papua New Guinea | 300 | ● | One, Kwamtim | Christianity | 5   | 10-50% ● | 50-100% ● | 
|   | One, Northern | Papua New Guinea | 4,200 | ● | One, Northern | Christianity | 5   | 10-50% ● | 50-100% ● | 
|   | One, Southern | Papua New Guinea | 400 | ● | One, Southern | Christianity | 5   | 10-50% ● | 50-100% ● | 
|   | Onjob | Papua New Guinea | 300 | ● | Ubir | Christianity | 5   | 10-50% ● | 50-100% ● | 
|   | Ono | Papua New Guinea | 16,000 | ● | Ono | Christianity | 5   | 10-50% ● | 50-100% ● | 
|   | Onondaga | Canada | -1 Unknown | ● | Onondaga | Christianity | 5   | 10-50% ● | 50-100% ● | 
|   | Ontenu | Papua New Guinea | 7,700 | ● | Ontenu | Christianity | 5   | 10-50% ● | 50-100% ● | 
|   | Ontong Java Islander | Solomon Islands | 4,900 | ● | Ontong Java | Christianity | 5   | 10-50% ● | 50-100% ● | 
|   | Oodham | United States | 22,000 | ● | Tohono O'odham | Christianity | 5   | 10-50% ● | 50-100% ● | 
|   | Opao | Papua New Guinea | 4,900 | ● | Opao | Christianity | 5   | 10-50% ● | 50-100% ● | 
|   | Opo | Ethiopia | 3,400 | ● | Opo | Christianity | 5   | 10-50% ● | 50-100% ● | 
|   | Orokaiva, Wasida | Papua New Guinea | 71,000 | ● | Orokaiva | Christianity | 5   | 10-50% ● | 50-100% ● | 
|   | Orokaiva-Hunjara | Papua New Guinea | 18,000 | ● | Hunjara-Kaina Ke | Christianity | 5   | 10-50% ● | 50-100% ● | 
|   | Orokolo, Keuru | Papua New Guinea | 49,000 | ● | Orokolo | Christianity | 5   | 10-50% ● | 50-100% ● | 
|   | Oromo, Guji | Ethiopia | 2,099,000 | ● | Oromo, Borana-Arsi-Guji | Christianity | 5   | 50-100% ● | 50-100% ● | 
|   | Oromo, Tulema / Selale | Ethiopia | 10,043,000 | ● | Oromo, West Central | Christianity | 5   | 10-50% ● | 50-100% ● | 
|   | Oromo, Tulema / Selale | United States | 53,000 | Oromo, West Central | Christianity | 5   | 10-50% ● | 10-50% ● | |
|   | Oromo, Tulema / Selale | Australia | 4,300 | Oromo, West Central | Christianity | 5   | 10-50% ● | 50-100% ● | |
|   | Oromo, Tulema / Selale | Canada | 1,300 | Oromo, West Central | Christianity | 5   | 10-50% ● | 50-100% ● | |
|   | Oromo, Wellega / Mecha | Ethiopia | 9,135,000 | ● | Oromo, West Central | Christianity | 5   | 10-50% ● | 50-100% ● | 
|   | Orowe | New Caledonia | 600 | ● | Orowe | Christianity | 5   | 10-50% ● | 50-100% ● | 
|   | Orri, Oring | Nigeria | 166,000 | ● | Oring | Christianity | 5   | 10-50% ● | 50-100% ● | 
| Totals: 3,376 People Groups | 1,876,711,000 |