To qualify for the membership of CAN,  a Church shall have been registered  under companies and  Allied Matters Act of 1990 or  previous legislation and shall belong to one of the five Church Groups namely:

* Catholic Secretariat of Nigeria (CSN)

* Christian Council of Nigeria (CCN)

*  Christian Pentecostal Fellowship of Nigeria (CPFN) / Pentecostal Fellowship of Nigeria (PFN)

*  Organisation of African Instituted Churches (OAIC)

*  TEKAN and ECWA Fellowships

GROUP DEFINED:

1.  Catholic Secretariat of Nigeria (CSN) is made up of the Catholic Church in Nigeria.

2.   Christian Council of Nigeria (CCN)  is made up of Anglican, Methodist, Baptist Churches, Four Square, Presbyterian, Eternal Sacred Order of C & S,  Church of the Lord Aladura and other Orthodox Churches.

3.   Christian Pentecostal Fellowship of Nigeria (CPFN) Pentecostal Fellowship of Nigeria (PFN) made up of Pentecostal Churches.

4.  Organisation of African Instituted Churches is made up of Churches founded by Nigerians (Africans) in Nigeria. These Churches have their origin in Nigeria (Africa).

5.  ECWA – Evangelical Church of West Africa (Former Sandan Interior Missions) which had root in Northern Nigeria and Tekan – Denominations based in  Northern Nigeria such as COCIN, HKAN NKST, Christian Assemblies, LCCN etc.