Tonga has a predominantly Christian religious landscape. In the 2021 Population and Housing Census, 99,408 valid religion responses were recorded from a population of 100,179. The Free Wesleyan Church accounted for 34.2% of responses, the Church of Jesus Christ of Latter-day Saints for 19.7%, the Roman Catholic Church for 13.7%, the Free Church of Tonga for 11.3% and the Church of Tonga for 6.8%. Assembly of God and Seventh-day Adventist communities each accounted for 2.5%, while other Pentecostal groups accounted for 1.9%. The census also recorded Tokaikolo or Maama fo'ou, the Constitutional Church, Mo'ui Fo'ou ia Kalaisi, the Bahá’í Faith, Anglican, Gospel Church, Jehovah's Witness, Salvation Army, Buddhist, Islamic and Hindu communities, as well as people reporting no religious affiliation. Their reported shares were each below 2%, apart from the categories already listed. The Church of Jesus Christ of Latter-day Saints separately reported 69,594 members, 175 congregations, one mission and one temple on 31 December 2025; those figures use a different method and cannot be compared directly with the census percentages. Churches, dioceses, parishes and wards provide worship, religious teaching, pastoral care and rites. The Tonga National Council of Churches, founded in 1973, provides an ecumenical forum. Church cooperation also appears through the National Forum of Church Leaders and initiatives such as One Tonga, which brought together several churches and state representatives for shared prayers, commemorations and public activities. The Roman Catholic Diocese of Tonga and Niue operates parishes, schools, clergy and charitable services including Caritas and the Society of St. Vincent de Paul. Other established communities include the Free Wesleyan Church, the Anglican Diocese of Tonga, Assembly of God, Seventh-day Adventist, Tokaikolo or Maama fo'ou, the Constitutional Church, Gospel Church, Salvation Army and Bahá’í communities. Sunday and the Sabbath have a distinct legal and social role. The Constitution protects freedom of worship and religious assembly, subject to the law and public peace, and does not expressly designate a state religion. At the same time, the Constitution treats the Sabbath as holy. Under the Order in Public Places Act, the Sabbath period runs from midnight on Saturday to midnight on Sunday. Trade, professional work and commercial activity are generally prohibited during that period, subject to statutory exceptions. Churches hold worship, prayer, preaching, Bible or moral instruction and denomination-specific sacraments or rites. PoLotu, an evening prayer practice, is used in some settings, and church activities may also be broadcast by radio or television. Public holidays reinforce this weekly rhythm. The Public Holidays Act 2020 provides for Good Friday, Easter Monday, Christmas Day and the day after Christmas, while Cabinet may designate additional special days. The Act also provides rules for shifting holidays. Opening hours, travel, commerce, events and access to services can therefore differ on Sundays, Sabbath periods and public holidays. Religious education is delivered through several church-linked school systems, including Roman Catholic, Free Wesleyan, Anglican, Free Church of Tonga or Tailulu, Church of Tonga or Anastasis and Lavengamalie schools. The Ministry of Education and Training's Education Strategic Policy Framework 2025–2035 includes Lotoʻi Tonga moral education based on Christian principles and Tongan ethics. Biblical Studies and Angafakafonua are being designed with churches and chaplains, with implementation expected through piloting and staged rollout. The available framework does not establish a single compulsory religious affiliation for every learner; the specific approach depends on the school system and its church relationship. Life-event practices differ by denomination and do not replace state registration. They may include baptism, marriage ceremonies, funerals, prayer and other rites. In the Free Wesleyan Church, parents or relatives generally notify the minister several days before a Sunday baptism, the minister checks the family's commitment to religious education and the baptism is entered in the Baptism Book. A funeral may take place in a church chapel. A religious marriage requires the applicable government authorization, an authorized minister and at least two witnesses. The marriage licence must be obtained before the ceremony, and the minister must send the certificate to the sub-registrar within three weeks. Only a marriage conducted and licensed in accordance with the legal requirements is legally recognized. The Registration Act schedule lists a fee of $25 for a marriage licence, $10 for an affidavit and $10 for a search; church donations or ceremony fees vary by denomination and no single national church tariff is established. Births must be registered within three weeks, while a death is reported by the responsible family member, representative or Town Officer. Access to worship and religious rites normally begins with the relevant parish, church, diocese or ward because there is no single central religious authority. Membership, preparation, teaching, ceremony dates and internal requirements depend on the denomination. Tonga has no single nationwide religious register identified in the applicable framework; religious bodies generally organize their own teaching, clergy and rites, while the Registrar General and other government offices handle civil registration and legal interfaces. Religious freedom therefore coexists with denomination-specific rules and with legal requirements affecting Sabbath activity and civil marriage.
Religion in Tonga
Religion in Tonga is predominantly Christian and strongly shapes public life, education, weekly schedules and life events. Lotu is the Tongan term commonly used for religious faith and practice, while siasi refers to a church or congregation. The 2021 census recorded the Free Wesleyan Church as the largest denomination, followed by the Church of Jesus Christ of Latter-day Saints, the Roman Catholic Church and several Tongan Methodist and Pentecostal churches. Constitutional protections for worship exist alongside legal Sabbath restrictions that affect trade, work and public activities.
Tip
Choose a church, school or religious service according to the specific practice, teaching and ceremony you need, because arrangements differ between denominations and local providers. Plan around Tonga’s Sabbath and public holidays, and treat church rites separately from civil requirements for marriage, birth and death registration.

