Title: State religion
Content:  A state religion (also called an established religion or official religion) is a religion or creed officially endorsed by a sovereign state. A state with an official religion, while not secular, is not necessarily a theocracy. State religions are official or government-sanctioned establishments of a religion, but the state does not need to be under the control of the religion (as in a theocracy) nor is the state-sanctioned religion necessarily under the control of the state. 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, 
Title: State religion
Content:  There is also a difference between a "state church" and the broader term of "state religion". A "state church" is a state religion created by a state for use exclusively by that state. An example of a "state religion" that is not also a "state church" is Roman Catholicism in Costa Rica, which was accepted as the state religion in the 1949 Constitution, despite the lack of a national church. 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; in the case of Catholicism, the Vatican has control over the church. In either case, the official state religion has some influence over the ruling of the state. As of 2012, there are only five state churches left, as most countries that once featured state churches have separated the church from their government.
Title: Religious law
Content:  A state religion (or established church) is a religious body officially endorsed by the state. A theocracy is a form of government in which a God or a deity is recognized as the supreme civil ruler. In both theocracies and some religious jurisdictions, conscientious objectors may cause religious offense. The contrary legal systems are secular states or multicultural societies in which the government does not formally adopt a particular religion, but may either repress all religious activity or enforce tolerance of religious diversity.
Title: Confessional state
Content:  A confessional state is a state which officially recognises and practices a particular religion, usually accompanied by a public cultus, and at least encourages its citizens to do likewise. Over human history, many states have been confessional states. This is especially true in countries where Christianity, Islam and Buddhism were the religions of the state. The idea of religious pluralism in modern terms is relatively recent, and until the beginning of the 20th century, many if not most nations had state religions enshrined in their respective constitutions or by decree of the monarch, even if other religions were permitted to practice. However, there are many examples of large multicultural empires that have existed throughout time where the religion of the state was not imposed on subjected regions. For instance, the Mongol Empire, where Tengrism was the religion of the court, but not imposed on those ruled by 
Title: State religion
Content:  Greek Orthodox, Russian Orthodox, Romanian Orthodox, Serbian Orthodox, Anglican and some Protestantism denominations as well as to Jewish congregations. ; 🇷🇺 Russia: Though a secular state under the constitution, Russia is often said to have Russian Orthodoxy as the de facto national religion, despite other minorities: "The Russian Orthodox Church is de facto privileged religion of the state, claiming the right to decide which other religions or denominations are to be granted the right of registration". ; 🇸🇬 Singapore is officially a secular country and does not have a state religion, and has been named in one study as the "most religiously diverse nation in the world", with no religious 
Title: Religion in politics
Content:  States have adopted various attitudes towards religions, ranging from theocracy to state atheism. A theocracy is "government by divine guidance or by officials who are regarded as divinely guided". Modern day recognised theocracies include the Islamic Republic of Iran and the Holy See, while the Taliban and Islamic State are insurgencies attempting to create such polities. Historical examples include the Islamic Caliphates and the Papal States. A more modest form of religious state activity is having an official state religion. Unlike a theocracy, this maintains the superiority of the state over the religious authorities. Over 20% (a total of 43) of the countries in the world have a state 
Title: State religion
Content:  The following states recognize some form of Protestantism as their state or official religion:
Title: State religion
Content: Kingdom of Hawaii: From 1862 to 1893 the Church of Hawaii, an Anglican body, was the official state and national church of the Kingdom of Hawaii. ; 🇳🇱 Netherlands: Article 133 of the 1814 Constitution stipulated the Sovereign Prince should be a member of the Reformed Church; this provision was dropped in the 1815 Constitution. The 1815 Constitution also provided for a state salary and pension for the priesthood of established religions at the time (Protestantism, Catholicism and Judaism). This settlement, nicknamed de zilveren koorde (the silver cord), was abolished in 1983. ; 🇳🇵 Nepal was the world's only Hindu state until 2015, when the new constitution declared it a secular state. Proselytizing remains illegal. ; Japanese Empire: see details in the State Shintō article. ; 🇸🇩 Sudan had Islam as the official religion during the rule of Omar al-Bashir according to the Constitution of Sudan of 2005. It was declared a secular state in September 2020. 
Title: State religion
Content: 🇨🇷 Costa Rica: 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." ; 🇱🇮 Liechtenstein: 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 practise their creeds and to hold religious services to the extent consistent with morality and public order". ; 🇲🇹 Malta: Article 2 of the Constitution of Malta declares 
Title: State religion
Content:  the term of theologia civilis. The first state-sponsored Christian church 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 

Question: What is the religion of state?
Answer: Catholic Church.
Roman Catholic Church.
Church.
Roman Apostolic Catholic Church.