The Church of the East was the earliest form of Christianity, as was adopted by the St Thomas Christians of the Malabar region (present-day Kerala). Later, the Orthodox Church, Roman Catholic & Protestant denominations were introduced; as a result of the arrival of European missionaries and colonisers.
- Blessing Youth Mission
- Brethren in Christ Church in India
- Bro Bakht Singh Assemblies(All over the World)
- Brethren Assembly (All over the World)
- Fellowship of Evangelical Friends
- Fellowship of Gospel Churches
- Fellowship of Indigenous Gospel Churches
- Filadelfia Fellowship Church of India
- Free Methodist Church of India
- Friends Missionary Prayer Band
- Faith Gospel Mission Kerala
Garment India Ministries
- Harvest Church India
- Hebron church Of Almighty God
- Hebron Missionary Fellowship
- HERMON CHURCH MINISTRY
- Himalaya Evangelical Mission
- Himalayan Free Church
- Hindustani Covenant Church
- Highland churches of India
- House of Prayer Fellowship
- Holy Almighty God Ministries
- Holy Way Ministries Trust
- Hosanna ministries
- Holy ministries
- HOLY MOUNTAIN PRAYER FELLOWSHIP
Logos Faith Foundation
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- Vishwasi Mandir (Aatmik Vishwavidyalaya)
- Yeshuva Evangelical Church
- Zeme Baptist Church Council
- World Christian Encyclopedia 2nd edition (Oxford University Press, 2001), first volume [pages needed]