State religion

A state religion is a religion or creed officially endorsed by a sovereign state. A state with an official religion, while not a secular state, is not necessarily a theocracy. State religions are subject to advantageous treatment by official or government-sanctioned establishments of them, ranging from incentivising citizens to recognise and practice them through government endorsement to having public spending on the maintenance of religious property and clergy be unrestricted, but the state does not need to be under the legislative control of the clergy as it would be in a theocracy. Generally, these religions have more rights and fewer restrictions in the country than other religions in a country.
Official religions have been known throughout human history in almost all types of cultures, reaching into the Ancient Near East and prehistory. The relation of religious cult and the state was discussed by the ancient Latin scholar Marcus Terentius Varro, under the term of theologia civilis. The first state-sponsored Christian denomination was the Armenian Apostolic Church, established in 301 CE. In Christianity, as the term church is typically applied to a place of worship for Christians or organizations incorporating such ones, the term state church is associated with Christianity as sanctioned by the government, historically the state church of the Roman Empire in the last centuries of the Empire's existence, and is sometimes used to denote a specific modern national branch of Christianity. Closely related to state churches are ecclesiae, which are similar but carry a more minor connotation.
In the Middle East, the majority of states with a predominantly Muslim population have Islam as their official religion, though the degree of religious restrictions on citizens' everyday lives varies by country. Rulers of Saudi Arabia use religious power, while Iran's secular presidents are supposed to follow the decisions of religious authorities since the 1979 Islamic Revolution. Turkey, which also has Muslim-majority population, became a secular country after Atatürk's Reforms, although unlike the Russian Revolution of the same time period, it did not result in the adoption of state atheism.
The degree to which an official national religion is imposed upon citizens by the state in contemporary society varies considerably; from high as in Saudi Arabia and Iran, to none at all as in Greenland, Denmark, England, Iceland, and Greece.

Types

The degree and nature of state backing for denomination or creed designated as a state religion can vary. It can range from mere endorsement with freedom for other faiths to practice, to prohibiting any competing religious body from operating and to persecuting the followers of other sects. In Europe, competition between Catholic and Protestant denominations for state sponsorship in the 16th century evolved the principle Cuius regio, eius religio embodied in the text of the treaty that marked the Peace of Augsburg in 1555. In England, Henry VIII broke with Rome in 1534, being declared the Supreme Head of the Church of England. The official religion of England continued to be "Catholicism without the Pope" until after his death in 1547.
In some cases, an administrative region may sponsor and fund a set of religious denominations; such is the case in Alsace-Moselle in France under its local law, following the pre-1905 French concordatory legal system and patterns in Germany.

State churches

A state church is a state religion established by a state for use exclusively by that state. In the case of a state church, the state has absolute control over the church, but in the case of a state religion, the church is ruled by an exterior body; for example, in the case of Catholicism, the Vatican has control over the church.

Disestablishment

Disestablishment is the process of repealing a church's status as an organ of the state. In a state where an established church is in place, opposition to such a move may be described as antidisestablishmentarianism.

Current states with a state religion

Buddhism

Governments where Buddhism, either a specific form of it, or Buddhism as a whole, has been established as an official religion:

Bhutan: The Constitution of Bhutan defines Tibetan Buddhism as the "spiritual heritage of Bhutan". The Constitution is based on Buddhist philosophy. It also mandates that the Druk Gyalpo should appoint the Je Khenpo and Dratshang Lhentshog.
Cambodia: The Constitution declared Theravada Buddhism as the official religion of the country. About 98% of Cambodia's population is Buddhist.
Myanmar: Section 361 of the Constitution states that "The Union recognizes the special position of Theravada Buddhism as the faith professed by the great majority of the citizens of the Union." The 1961 State Religion Promotion and Support Act requires the government to teach Buddhist lessons in schools, to give priority to Buddhist monasteries in founding of primary schools, to make Uposatha days holidays during Vassa months, to broadcast Buddhist sermons by State media on Uposatha days, and otherwise promote and support Buddhism as State Religion.
Sri Lanka: The constitution of Sri Lanka states under Chapter II, Article 9, "The Republic of Sri Lanka shall give to Buddhism the foremost place and accordingly it shall be the duty of the State to protect and foster the Buddha Sasana, while assuring to all religions the rights granted by Articles 10 and 14".

In some countries, Buddhism is not recognized as a state religion, but holds special status:

Thailand: Article 67 of the Constitution of Thailand states: The State should support and protect Buddhism In supporting and protecting Buddhism, the State should promote and support education and dissemination of dharmic principles of Theravada Buddhism , and shall have measures and mechanisms to prevent Buddhism from being undermined in any form. The State should also encourage Buddhists to participate in implementing such measures or mechanisms.
Laos: According to the Constitution of Laos, Buddhism is given special privilege in the country. The state respects and protects all the lawful activities of Buddhism.
Mongolia: The Emblem of Mongolia has multiple Tibetan Buddhist symbols, including a Wheel of Dharma, a lotus, and the Three Jewels. The Buddha's Birthday is also a public holiday in Mongolia. Moreover, the 100 tögrög coin depicts Janraisig Temple, a Tibetan Buddhist monastery, on its obverse.
Kalmykia : The Kalmyk local government supports Tibetan Buddhism and also encourages Buddhist teachings and traditions. It also builds various Buddhist temples and sites. Various efforts are taken by the Government for the revival of Tibetan Buddhism in the republic.
Christianity

The following states recognize some form of Christianity as their state or official religion or recognize a special status for it :

Non-denominational Christianity

: On 12 March 2025, Parliament voted to amend the Constitution of Papua New Guinea to include in its preamble the words " acknowledge and declare God, the Father; Jesus Christ, the Son; and Holy Spirit, as our Creator and Sustainer of the entire universe and the source of our powers and authorities, delegated to the people and all persons within the geographical jurisdiction of Papua New Guinea."
: In June 2017, Parliament voted to amend the wording of Article1 of the constitution, thereby making Christianity the state religion. Part 1, Section reads "Samoa is a Christian nation founded on God the Father, the Son and the Holy Spirit." The status of the religion had previously only been mentioned in the preamble, which Prime Minister Tuilaepa Aiono Sailele Malielegaoi considered legally inadequate.
: The preamble to the Zambian Constitution of 1991 declares Zambia to be "a Christian nation", while also guaranteeing freedom of religion.
Catholicism

Jurisdictions where Catholicism has been established as a state or official religion:

: Article 75 of the Constitution of Costa Rica confirms that "The Catholic and Apostolic Religion is the religion of the State, which contributes to its maintenance, without preventing the free exercise in the Republic of other forms of worship that are not opposed to universal morality or good customs."
: It is an elective, theocratic, absolute monarchy ruled by the Pope, who is also the Vicar of Christ. The highest state functionaries are all Catholic clergy of various national origins. It is the sovereign territory of the Holy See and the location of the Pope's official residence, referred to as the Apostolic Palace.
: The Constitution of Liechtenstein describes the Catholic Church as the state religion and enjoying "the full protection of the State". The constitution does however ensure that people of other faiths "shall be entitled to practice their creeds and to hold religious services to the extent consistent with morality and public order".
: Article 2 of the Constitution of Malta declares that "the religion of Malta is the Catholic and Apostolic Religion".
: Article 9 of the Constitution of Monaco describes the "Catholic, and apostolic religion" as the religion of the state.

Jurisdictions that give various degrees of recognition in their constitutions to Roman Catholicism without establishing it as the State religion:

: The Constitution of Andorra allows the Roman Catholic Church to practice freely and openly, and keeps a special relationship between the Church and the government, based on tradition. It also recognizes the Church’s organizations as legal entities, according to their own rules.The government appoints the Roman Catholic Bishop of Urgell, based in Catalonia, Spain, as one of two heads of state, alongside the President of France. Following the revised Education Law of April 2022, the Constitution bans the use of conspicuous religious symbols in public schools and is an attempt to secularize public education.
: Article 2 of the Constitution of Argentina explicitly states that the government supports the Roman Catholic Apostolic Faith, but the constitution does not establish a state religion. Before its 1994 amendment, the Constitution stated that the President of the Republic must be a Roman Catholic.
: Although Article 3 of the Constitution of El Salvador states that "no restrictions shall be established that are based on differences of nationality, race, sex or religion", Article 26 states that the state recognizes the Catholic Church and gives it legal preference.
: The Constitution of Guatemala recognises the juridical personality of the Catholic Church. Other churches, cults, entities, and associations of religious character will obtain the recognition of their juridical personality in accordance with the rules of their institution.
: The Constitution of Italy does not establish a state religion, but recognizes the state and the Catholic Church as "independent and sovereign, each within its own sphere". The Constitution additionally reserves to the Catholic faith singular position in regard to the organization of worship, as opposed to all other confessions.
: The Constitution of Panama recognizes Catholicism as "the religion of the majority" of citizens but does not designate it as the official state religion.
: The Constitution of Paraguay recognizes the Catholic Church's role in the nation's historical and cultural formation.
: The Constitution of Peru recognizes the Catholic Church as an important element in the historical, cultural, and moral formation of Peru and lends it its cooperation.
: The Constitution of Poland states that "The relations between the Republic of Poland and the Roman Catholic Church shall be determined by international treaty concluded with the Holy See, and by statute."
: The Constitution of Spain of 1978 abolished Catholicism as the official state religion, while recognizing the role it plays in Spanish society. The State allocates the 0.7% of the personal income tax corresponding to taxpayers who express their will to support the Catholic Church.
: While the Constitution of Timor-Leste enshrines the principles of freedom of religion and separation of church and state in Section 45 Comma 1, it also acknowledges "the participation of the Catholic Church in the process of national liberation" in its preamble.