Blasphemy law in Indonesia () is the legislation, presidential decrees, and ministerial directives that prohibit blasphemy in Indonesia.

Blasphemy laws in the country have been adapted from the statutes of the Dutch East Indies, criminalizing those who deviate from the religious tenets of one of Indonesia's six recognized religions (Islam, Protestantism, Catholicism, Hinduism, Buddhism and Confucianism); from Presidential decrees, and been encouraged in the 21st century by "ascendant Islamic conservatives ... pushing hard-line policies."

As the majority of Indonesians (over 80%) are Muslims, most blasphemy cases and convictions in recent years have been for blasphemy against Islam. Since the early 2000s, Blasphemy prosecutions and convictions have risen in the country, but been criticized (by Amnesty International) for targeting religious minority groups and Islamic dissenters. Among the acts that have led to incarceration include reciting Muslim prayers in the Indonesian language; using "paranormal healing methods" in drug and cancer treatment; complaining about the volume of a mosque loudspeaker issuing call to prayer near the perpetrator's home; eating pork rinds in a social media video; serving free alcohol beverages for customers whose names were Muhammad and Maria. Several government officials and prominent political leaders interacted in public forums and seminars with religious leaders and interfaith groups such as the Indonesian Anti-Discrimination Movement and National People's Solidarity (Solidaritas Nusa Bangsa) in order to combat discrimination based on religious identity.

Basis in Indonesian law and society Blasphemy laws in the country have been adapted from the statutes of the Dutch East Indies, the colony of the Netherlands that became Indonesia. The statutes apply to those who deviate from the religious tenets of one of Indonesia's six official religions: Islam, Protestantism, Catholicism, Hinduism, Buddhism and Confucianism.

Criminal Code Indonesia's Criminal Code prohibits blasphemy. The Code's Article 156(a) targets those who deliberately, in public, express feelings of hostility, hatred, or contempt against religions with the purpose of preventing others from adhering to any religion, and targets those who disgrace a religion. The penalty for violating Article 156(a) is a maximum of five years' imprisonment. The blasphemy law has been "on the statute books since 1965 but was rarely used" before the end of the rule of President Soeharto.

Presidential decree Article 156(a) is the complement to a decree enacted by President Sukarno and implemented by President Soeharto, namely, Presidential Decree No. 1/PNPS/1965 on the Prevention of Blasphemy and Abuse of Religions. Article 1 of the decree prohibits the "deviant interpretation" of religious teachings, and mandates the President to dissolve any organisation practicing deviant teachings. Until the end of the 20th century, Indonesian society was tolerant of Islam (87% of the population), Roman Catholicism, Protestantism, Hinduism, Sikhism, Buddhism, Judaism, and animism. The Government was tolerant of persons with no religion, but does not count them in any census.

Constitution Article 29 of Indonesia's Constitution stipulates "the state is based on the belief in the one supreme God." The Constitution does not dictate which religion's version of God should be worshipped. In January 2006, the Ministry of Religious Affairs accorded official status to six religions: Islam, Catholicism, Protestantism, Buddhism, Hinduism and Confucianism. On 9 December 2006, the House of Representatives passed a new civil registration bill requiring citizens to identify themselves on government ID cards as a member of one of the six religions.

Indonesian Ulema Council The Government formed a body of Muslim advisors, the Indonesian Ulema Council (MUI) in 1975, and continues to fund and appoint its members. The MUI is not formally a government body but it is influential. The Government considers the MUI's fatwa when making decisions or drafting legislation. In July 2005, the MUI issued a fatwa that condemned the sect of Ahmadiyya as a heresy. In June 2008, the Ministry of Religious Affairs and the Home Ministry issued a Joint Ministerial Letter regarding the Ahmadiyya. The letter told authorities to restrict Ahmadiyya activities to private worship, and to prevent Ahmadi Muslims from proselytising. Provincial governors in West Sumatra, South Sumatra, and West Nusa Tenggara banned all Ahmadiyya activity.

Conflict Indonesia's laws and policies have produced many instances where members of one religion have persecuted the members of other religions or of other sects. Starting around the year 2000, the Islamic revival has reportedly "nurtured a small but growing number of groups espousing intolerance and extremism under the banner of Islamic orthodoxy." The authorities have not brought to justice many extremists perpetrators of crimes, crimes that are commonly justified by the perpetrators as actions against hatred, heresy, blasphemy, or deviance.

In October 2009, a group of petitioners, including some human rights groups, requested that Indonesia's Constitutional Court review the 1965 Law on Blasphemy. On 19 April 2010, the Court announced its refusal to make the review. "If the Blasphemy Law was scrapped before a new law was enacted ... it was feared that misuses and contempt of religion would occur and trigger conflicts in society," Justice Akil Mochtar said. The Court offered an interpretation of the Law. The interpretation says the state recognises six religions, and "leaves alone" the followers of other religions.

Selected cases 2005-2009

In June 2005, police charged a lecturer at the Muhammadiyah University in Palu for heresy. The police held the lecturer for five days before placing him under house arrest after two thousand persons protested against his published editorial: "Islam, A Failed Religion." The editorial, among other things, highlighted the spread of corruption in Indonesia. The lecturer was released from house arrest and was dismissed by the university. In August 2005, East Java's Malang District Court sentenced Muhammad Yusman Roy to two years' imprisonment for reciting Muslim prayers in Indonesian, which, according to the Indonesian Ulema Council, tarnished the purity of Arabic-based Islam. Roy was released from prison on 9 November 2006 after serving eighteen months of his sentence. In September 2005, an East Java court sentenced each of six drug and cancer treatment counselors at an East Java treatment center to five years in prison and an additional three years in prison for violating key precepts of Islam by using paranormal healing methods. A local MUI edict characterised the center's methods as heretical. Police arrested the counselors while they tried to defend themselves from hundreds of persons who raided the center's headquarters. In October 2005, police in Central Sulawesi raided their neighborhood Mahdi sect after locals from other villages complained that sect followers were not fasting or not performing ritual prayers during Ramadan. Three policemen and two sect members died in the clash. Local courts tried five Mahdi members for killing the police. In January 2006, the Mahdi members were convicted and sentenced to between nine and twelve years in prison. In November 2005, local police on the island of Madura arrested a man for denigrating a religion because he publicly professed a nontraditional version of Islam. A court sentenced the man to two-and-a-half years' imprisonment. In May 2006, the press reported that the Banyuwangi, East Java regional legislature voted to oust from office Banyuwangi's Regent, Ratna Ani Lestari. Those in favor of the ouster accused Ratna, a Muslim by birth, of blaspheming Islam by practicing a different religion from the one stated on her identity card. Ratna's supporters stated that she was the target of a religiously motivated smear campaign because of her marriage to a Hindu. On 28 June 2006, the Polewali, South Sulawesi state court sentenced Sumardi Tappaya, a Muslim and a high school religious teacher, to six months in prison for heresy after a relative accused him of whistling during prayers. The local MUI declared the whistling deviant. On 10 April 2007, police in the town of Pasuruan, East Java, arrested two men, Rochamim (or Rohim) and Toyib. Toyib was a follower of Rochamim who, according to local residents, said things such as Islam is an Arab religion; prayers five times a day are unnecessary; and the Quran is full of lies. The police charged Toyib under Article 156(a) because he was telling others what Rochamim said. In April 2007, police in Malang, East Java, detained forty-two Protestant Christians for disseminating a "prayer video" that instructs individuals to put the Quran on the ground, and to pray for the conversion of Indonesia's Muslim political leaders. In September 2007, a local court found each of those detained guilty of insulting religion, and sentenced each to five years in prison. On 11 November 2007, the Supreme Court of Indonesia sentenced Abdul Rahman, a senior member of the Lia Eden sect (Eden Community), to three years in prison for blasphemy because he claimed to be a reincarnation of Muhammad. In April 2008, a court sentenced Ahmad Moshaddeq, the leader of a sect called Al-Qiyadah al-Islamiyah, to four years in prison for committing blasphemous acts. On 2 May 2008, Padang District Court sentenced Dedi Priadi and Gerry Lufthi Yudistira, also members of the Al-Qiyadah al-Islamiyah sect, to three years in prison under Article 156(a). On 9 December 2008, hundreds of Muslim rioters damaged sixty-seven houses, a church, and a community hall, and injured five people in Masohi, Central Maluku. The rioters were allegedly angry that a Christian school teacher, Wilhelmina Holle, had allegedly said something blasphemous during an after-class tutorial at an elementary school. The police arrested Holle for blasphemy. The police arrested two Muslim men for inciting violence. On 2 June 2009, the Central Jakarta District Court convicted Lia Eden, also known as Lia Aminuddin or Syamsuriati, of blasphemy. The court accepted that Eden had proselytised the religion she founded, known as Salamullah. The court sentenced her to two years and six months in prison. Eden had already served sixteen months for the same offence because of the same court's sentence on 29 June 2006. In 1997, the MUI had issued an edict declaring Eden's religion deviant. Lia's right-hand man, Wahyu Andito Putro Wibisono, who was also accused of the crime, was given a two-year prison sentence.

2010-current On 6 May 2010, a court sentenced Bakri Abdullah to one year in jail for blasphemy because the 70-year-old said he was a prophet and had visited heaven in 1975 and 1997.https://www.webcitation.org/5px52XxdQ?url=http://www.google.com/hostednews/afp/article/ALeqM5ijbg0WsNAk-AzhKMByUt8lxyOHtA Indonesian prophet jailed for blasphemy. In January 2012, an Indonesian man named Alexander Aan who said on Facebook that God did not exist is facing jail, as atheism is reportedly "a violation of Indonesian law under the founding principles of the country". In May 2017, Basuki Tjahaja Purnama during his tenure as the governor of Jakarta, made a controversial speech while introducing a government project at Thousand Islands in which he referenced a verse from the Quran. His opponents criticised this speech as blasphemous, and reported him to the police. He was later convicted of blasphemy against Islam by the North Jakarta District Court and sentenced to two years' imprisonment. This decision barred him from serving as the governor of Jakarta, and he was replaced by his deputy, Djarot Saiful Hidayat. According to Al Jazeera, the charges against him were "widely seen as politically motivated".