| Language | Population | Country | Religion | Christian | Evangelical | NT | Engaged |
|---|---|---|---|---|---|---|---|
| Persian, Iranian | 30,132,000 | Iran | Islam | 1% | 0.90% | Complete | Engaged |
| Azerbaijani, South | 15,375,000 | Iran | Islam | 0.10% | 0.09% | Incomplete | Engaged |
| Mazanderani | 4,246,000 | Iran | Islam | 0.00% | 0.00% | Incomplete | Engaged |
| Gilaki | 4,244,000 | Iran | Islam | 0.00% | 0.00% | Incomplete | Engaged |
| Kurdish, Southern | 3,547,000 | Iran | Islam | 0.05% | 0.01% | Incomplete | Engaged |
| Turkmen | 2,448,000 | Iran | Islam | 0.30% | 0.05% | Complete | Engaged |
| Pashto, Southern | 2,197,000 | Iran | Islam | 0.02% | 0.00% | Incomplete | Engaged |
| Kashkay | 1,836,000 | Iran | Islam | 0.00% | 0.00% | Incomplete | Engaged |
| Luri, Northern | 1,757,000 | Iran | Islam | 0.00% | 0.00% | Incomplete | Engaged |
| Arabic, Mesopotamian Spoken | 1,450,000 | Iran | Islam | 0.30% | 0.10% | Incomplete | Engaged |
| Bakhtiari | 1,171,000 | Iran | Islam | 0.00% | 0.00% | Incomplete | Engaged |
| Laki | 1,161,000 | Iran | Islam | 0.00% | 0.00% | Incomplete | Engaged |
| Luri, Southern | 957,000 | Iran | Islam | 0.00% | 0.00% | Incomplete | Engaged |
| Khorasani Turkish | 886,000 | Iran | Islam | 0.00% | 0.00% | Incomplete | Engaged |
| Domari | 785,000 | Iran | Islam | 0.00% | 0.00% | Incomplete | Engaged |
| Balochi, Western | 704,000 | Iran | Islam | 0.00% | 0.00% | Incomplete | Engaged |
| Kurdish, Central | 527,000 | Iran | Islam | 0.20% | 0.04% | Complete | Engaged |
| Balochi, Southern | 474,000 | Iran | Islam | 0.00% | 0.00% | Complete | Unengaged |
| Kurdish, Northern | 465,000 | Iran | Islam | 0.40% | 0.10% | Complete | Engaged |
| Takestani | 374,000 | Iran | Islam | 0.00% | 0.00% | Incomplete | Engaged |
| Dari | 370,000 | Iran | Islam | 0.00% | 0.00% | Complete | Engaged |
| Hazaragi | 368,000 | Iran | Islam | 0.05% | 0.01% | Incomplete | Engaged |
| Arabic, Gulf Spoken | 260,000 | Iran | Islam | 1% | 0.10% | Incomplete | Engaged |
| Aimaq | 192,000 | Iran | Islam | 0.00% | 0.00% | Incomplete | Unengaged |
| Talysh | 146,000 | Iran | Islam | 0.00% | 0.00% | Incomplete | Engaged |
| Lari | 112,000 | Iran | Islam | 0.00% | 0.00% | Incomplete | Engaged |
| Fars, Southwestern | 104,000 | Iran | Islam | 0.00% | 0.00% | Incomplete | Engaged |
| Assyrian Neo-Aramaic | 103,000 | Iran | Christianity | 97% | 0.50% | Complete | Engaged |
| Armenian | 102,000 | Iran | Christianity | 94% | 8% | Complete | Engaged |
| Tajiki | 84,200 | Iran | Islam | 0.02% | 0.00% | Complete | Engaged |
| Urdu | 84,100 | Iran | Islam | 0.00% | 0.00% | Complete | Unengaged |
| Semnani | 65,000 | Iran | Islam | 0.00% | 0.00% | Incomplete | Engaged |
| Georgian | 61,700 | Iran | Christianity | 79% | 2% | Complete | Engaged |
| Khalaj, Turkic | 51,400 | Iran | Islam | 0.80% | 0.50% | Incomplete | Engaged |
| Karakalpak | 50,500 | Iran | Islam | 0.00% | 0.00% | Complete | Unengaged |
| Khalaj | 49,800 | Iran | Islam | 0.00% | 0.00% | Complete | Unengaged |
| Sangisari | 39,500 | Iran | Islam | 0.00% | 0.00% | Incomplete | Engaged |
| Panjabi, Eastern | 33,700 | Iran | Hinduism | 1% | 0.10% | Complete | Unengaged |
| Romani, Balkan | 33,600 | Iran | Islam | 5% | 0.40% | Complete | Engaged |
| Gujarati | 33,500 | Iran | Islam | 0.50% | 0.10% | Complete | Unengaged |
| Harzani | 33,300 | Iran | Islam | 0.00% | 0.00% | Incomplete | Unengaged |
| Gurani | 27,100 | Iran | Islam | 0.00% | 0.00% | Incomplete | Engaged |
| Parsi-Dari | 26,100 | Iran | Ethnic | 0.00% | 0.00% | Incomplete | Unengaged |
| Ashtiani | 25,000 | Iran | Islam | 0.00% | 0.00% | Incomplete | Engaged |
| Khunsari | 24,900 | Iran | Islam | 0.00% | 0.00% | Incomplete | Engaged |
| Brahui | 22,300 | Iran | Islam | 0.00% | 0.00% | Complete | Engaged |
| Karingani | 20,800 | Iran | Islam | 0.00% | 0.00% | Incomplete | Engaged |
| Vafsi | 20,700 | Iran | Islam | 0.00% | 0.00% | Incomplete | Unengaged |
| Korean | 16,800 | Iran | Secular | 31% | 16% | Complete | Engaged |
| Dari, Zoroastrian | 13,700 | Iran | Ethnic | 0.00% | 0.00% | Incomplete | Engaged |