The Nauru Congregational Church (NCC) is the largest religious denomination in Nauru, claiming as members approximately 60% of Nauru's population of about 10,000.^[1][2][3]

In the 2011 census, it was noted that those affiliating to the NCC made up 35.7% of the island's population, 3,552 out of 9,945 people.^[4] In the following census, 10 years later in 2021, 4001 people, out of a population of 11,680 people (34.3%) claimed affiliation with the NCC. This was followed very closely by the Roman Catholic Church with 3,959 (33.9%).^[4]

The NCC is a Protestant Congregationalist denomination. It has seven congregations in Nauru.^[1] Each of the congregations is headed by a deacon. Rene Harris, a former president of Nauru, has served as the general secretary of the church.^[1]

In 2015, Pastor Wanda Joleen Hiram and Pastor Ruth Omodien Garabwan became the first women to be ordained as ministers in the NCC.^[5]

• Religion in Nauru