Among the Christian denominations active in Guyana in the 1990s, the Anglican Church claimed the largest membership: about 125,000 adherents as of 1986. Anglicanism was the state religion of British Guiana until independence. The Roman Catholic Church had a membership of about 94,000 in 1985. The majority of Roman Catholics lived in Georgetown, and the Portuguese were the most active members, although all the ethnic groups were represented. The Presbyterian Church was the third largest denomination, with nearly 39,000 members in 1980. Several other Christian churches had significant memberships in 1980, including the Methodists, Pentecostals, and Seventh-Day Adventists, each of which had about 20,000 members. There were smaller numbers of Baptists, Jehovah's Witnesses, Congregationalists, Nazarenes, Moravians, Ethiopian Orthodox, and other mainstream Christians. Other sects in Guyana included Rastafarianism (see Glossary), which looks to Ethiopia for religious inspiration, and the Hallelujah Church, which combines Christian beliefs with Amerindian traditions. There were also at least 60,000 people describing themselves as Christian who had no formal church affiliation.

Data as of January 1992