thumb|First woman [[Mariavite Church|Mariavite bishop Maria Izabela Wiłucka-Kowalska was consecrated in 1929 in Płock.]]

thumb|[[Katharine Jefferts Schori was elected in 2006 as the first female Presiding Bishop of the U.S. Episcopal Church and also the first female primate in the Anglican Communion.]]

The ordination of women to ministerial or priestly office is an increasingly common practice among some contemporary major religious groups. It remains a controversial issue in certain religious groups in which ordination was traditionally reserved for men. Where laws prohibit sex discrimination in employment, exceptions are often made for clergy (for example in the United States) on grounds of separation of church and state. In some cases, women have been permitted to be ordained, but not to hold higher positions, such as (until October 2025) that of the Archbishop of Canterbury, in the Church of England.

Ancient pagan religions

Sumer and Akkad

thumb|[[Cylinder seal (c. 2100 BC) depicting goddesses conducting mortal males through a religious rite]]

Sumerian and Akkadian EN were top-ranking priestesses distinguished by special ceremonial attire and holding equal status to high priests. They owned property, transacted business, and initiated the hieros gamos ceremony with priests and kings. Enheduanna (2285–2250 BC), an Akkadian princess, was the first known holder of the title "EN Priestess". Ishtaritu were temple prostitutes who specialized in the arts of dancing, music, and singing and served in the temples of Ishtar.

Puabi was a NIN, an Akkadian priestess of Ur in the 26th century BC. Nadītu, sometimes described as priestesses in modern literature, are attested from various cities from the Old Babylonian period. They were recruited from various social groups, ranging from craftsmen to royal families, and were supposed to remain childless; they owned property and transacted business. In Sumerian epic texts such as Enmerkar and the Lord of Aratta, Nu-Gig were priestesses in temples dedicated to Inanna, or may be a reference to the goddess herself. Qadishtu, Hebrew () or Kedeshah, derived from the root Q-D-Š, are mentioned in the Hebrew Bible as sacred prostitutes usually associated with the goddess Asherah.

Ancient Egypt

thumb|upright|[[Sarcophagus of the Egyptian priestess Iset-en-kheb, 25th–26th Dynasty (7th–6th century BC)]]

In Ancient Egyptian religion, God's Wife of Amun was the highest ranking priestess; this title was held by a daughter of the High Priest of Amun, during the reign of Hatshepsut, while the capital of Egypt was in Thebes during the second millennium BC (circa 2160 BC). Later, Divine Adoratrice of Amun was a title created for the chief priestess of Amun. During the first millennium BC, when the holder of this office exercised her largest measure of influence, her position was an important appointment facilitating the transfer of power from one pharaoh to the next, when his daughter was adopted to fill it by the incumbent office holder. The Divine Adoratrice ruled over the extensive temple duties and domains, controlling a significant part of the ancient Egyptian economy.

Ancient Egyptian priestesses:

  • Gautseshen
  • Henutmehyt
  • Henuttawy
  • Hui
  • Iset
  • Karomama Meritmut
  • Maatkare Mutemhat
  • Meritamen
  • Neferhetepes is the earliest attested priestess of Hathor.
  • Neferure
  • Tabekenamun a priestess of Hathor as well as a priestess of Neith.

Ancient Greece

thumb|left|upright|Female figure carrying a torch and piglet to celebrate rites of Demeter and Persephone (from [[Attica, 140–130 BC)]]

In ancient Greek religion, some important observances, such as the Thesmophoria, were made by women. Priestesses, Hiereiai, served in many different cults of many divinities, with their duties varying depending on the cult and the divinity in which they served. Priestesses played a major role in the Eleusinian Mysteries, in which they served on many levels, from the High Priestess of Demeter and Dadouchousa Prietess to the Panageis and Hierophantides. The Gerarai were priestesses of Dionysus who presided over festivals and rituals associated with the god.

A body of priestesses might also maintain the cult at a particular holy site, such as the Peleiades at the oracle of Dodona. The Arrephoroi were young girls ages seven to twelve who worked as servants of Athena Polias on the Athenian Acropolis and were charged with conducting unique rituals under the surveillance of the High Priestess of Athena Polias. The Priestess of Hera at Argos served at the Heraion of Argos and enjoyed great prestige in all Greece.

At several sites women priestesses served as oracles, the most famous of which is the Oracle of Delphi. The priestess of the Temple of Apollo at Delphi was the Pythia, credited throughout the Greco-Roman world for her prophecies, which gave her a prominence unusual for a woman in male-dominated ancient Greece. The Phrygian Sibyl presided over an oracle of Apollo in Anatolian Phrygia. The inspired speech of divining women, however, was interpreted by male priests; a woman might be a mantic (mantis) who became the mouthpiece of a deity through possession, but the "prophecy of interpretation" required specialized knowledge and was considered a rational process suited only to a male '"prophet" (prophētēs).

Ancient Rome

alt=|thumb|The Virgo Vestalis Maxima, the highest-ranking of the Vestal Virgins

The Latin word sacerdos, "priest", is the same for both the grammatical genders. In Roman state religion, the Vestal Virgins were responsible for the continuance and security of Rome as embodied by the sacred fire that they were required to tend on pain of extreme punishment. The Vestals were a college of six sacerdotes (plural) devoted to Vesta, goddess of the hearth, both the focus of a private home (domus) and the state hearth that was the center of communal religion. Freed of the usual social obligations to marry and rear children, the Vestals took a vow of chastity in order to devote themselves to the study and correct observance of state rituals that were off-limits to the male colleges of priests. They retained their religious authority until the Christian emperor Gratian confiscated their revenues and his successor Theodosius I closed the Temple of Vesta permanently.

The Romans also had at least two priesthoods that were each held jointly by a married couple, the rex and regina sacrorum, and the flamen and flaminica Dialis. The regina sacrorum ("queen of the sacred rites") and the flaminica Dialis (high priestess of Jupiter) each had her own distinct duties and presided over public sacrifices, the regina on the first day of every month, and the flaminica every nundinal cycle (the Roman equivalent of a week). The highly public nature of these sacrifices, like the role of the Vestals, indicates that women's religious activities in ancient Rome were not restricted to the private or domestic sphere. So essential was the gender complement to these priesthoods that if the wife died, the husband had to give up his office. This is true of the flaminate, and probably true of the rex and regina. such as a sacerdos Cereris or Cerealis, "priestess of Ceres", an office never held by men. Female sacerdotes played a leading role in the sanctuaries of Ceres and Proserpina in Rome and throughout Italy that observed so-called "Greek rite" (ritus graecus). This form of worship had spread from Sicily under Greek influence, and the Aventine cult of Ceres in Rome was headed by male priests. Only women celebrated the rites of the Bona Dea ("Good Goddess"), for whom sacerdotes are recorded. The Temple of Ceres in Rome was surved by the Priestess of Ceres, Sacerdos Cereris, and the Temple of Bona Dea by the Priestess of Bona Dea, Sacerdos Bonae Deae. Other Priestesses were the Sacerdos Liberi, Sacerdos Fortunae Muliebris and the Sacerdos Matris Deum Magnae Idaeae; sacerdos also served as priestesses of the Imperial cult.

thumb|left|Latin dedication to the goddess [[Isis Augusta by Lucretia Fida, a sacerdos (priest), from Roman Iberia]]

From the Mid Republic onward, religious diversity became increasingly characteristic of the city of Rome. Many religions that were not part of Rome's earliest state religion offered leadership roles as priests for women, among them the imported cult of Isis and of the Magna Mater ("Great Mother", or Cybele). An epitaph preserves the title sacerdos maxima for a woman who held the highest priesthood of the Magna Mater's temple near the current site of St. Peter's Basilica. Inscriptions for the Imperial era record priestesses of Juno Populona and of deified women of the Imperial household. the secrecy of some mystery cults was regarded with suspicion. In 189 BC, the senate attempted to suppress the Bacchanals, claiming the secret rites corrupted morality and were a hotbed of political conspiracy. One provision of the senatorial decree was that only women should serve as priests of the Dionysian religion, perhaps to guard against the politicizing of the cult, since even Roman women who were citizens lacked the right to vote or hold political office. Priestesses of Liber, the Roman god identified with Dionysus, are mentioned by the 1st-century BC scholar Varro, as well as indicated by epigraphic evidence.]]

The tradition of the ordained monastic community in Buddhism (the sangha) began with the Buddha, who established an order of monks. According to the scriptures, later, after an initial reluctance, he also established an order of nuns. Fully ordained Buddhist nuns are called bhikkhunis. Mahapajapati Gotami, the aunt and foster mother of Buddha, was the first bhikkhuni; she was ordained in the sixth century BC. Prajñādhara is the twenty-seventh Indian Patriarch of Zen Buddhism and is believed to have been a woman.<!-- not a valid ISBN in most databases, but this is the number on the book, at Amazon.com, and the publisher http://olympiazencenter.org/home/temple_ground_press -->

In the Mahayana tradition during the 13th century, the Japanese Mugai Nyodai became the first female Zen master in Japan. However, the bhikkhuni ordination once existing in the countries where Theravada is more widespread died out around the 10th century, and novice ordination has also disappeared in those countries. Therefore, women who wish to live as nuns in those countries must do so by taking eight or ten precepts. Neither laywomen nor formally ordained, these women do not receive the recognition, education, financial support or status enjoyed by Buddhist men in their countries. These "precept-holders" live in Burma, Cambodia, Laos, Nepal, and Thailand. In particular, the governing council of Burmese Buddhism has ruled that there can be no valid ordination of women in modern times, though some Burmese monks disagree. However, in 2003, Saccavadi and Gunasari were ordained as bhikkhunis in Sri Lanka, thus becoming the first female Burmese novices in modern times to receive higher ordination in Sri Lanka.

Japan is a special case as, although it has neither the bhikkhuni nor novice ordinations, the precept-holding nuns who live there do enjoy a higher status and better training than their precept-holder sisters elsewhere, and can even become Zen priests. In Tibet there is currently no bhikkhuni ordination, but the Dalai Lama has authorized followers of the Tibetan tradition to be ordained as nuns in traditions that have such ordination.

The bhikkhuni ordination of Buddhist nuns has always been practiced in East Asia.

In 1996, through the efforts of Sakyadhita, an International Buddhist Women Association, ten Sri Lankan women were ordained as bhikkhunis in Sarnath, India. Also, bhikkhuni ordination of Buddhist nuns began again in Sri Lanka in 1998 after a lapse of 900 years. In 2003 Ayya Sudhamma became the first American-born woman to receive bhikkhuni ordination in Sri Lanka.

Dhammananda Bhikkhuni was ordained in Sri Lanka. Dhammananda Bhikkhuni's mother Venerable Voramai, also called Ta Tao Fa Tzu, had become the first fully ordained Thai woman in the Mahayana lineage in Taiwan in 1971.

A 55-year-old Thai Buddhist 8-precept white-robed maechee nun, Varanggana Vanavichayen, became the first woman ordained as a monk in Thailand, in 2002. Since then, the Thai Senate has reviewed and revoked the secular law passed in 1928 banning women's full ordination in Buddhism as unconstitutional for being counter to laws protecting freedom of religion. However Thailand's two main Theravada Buddhist orders, the Mahanikaya and Dhammayutika Nikaya, have yet to officially accept fully ordained women into their ranks. In 2009, four women in Australia received bhikkhuni ordination as Theravada nuns, the first time such ordination had occurred in Australia. It was performed in Perth, Australia, on 22 October 2009 at Bodhinyana Monastery. Abbess Vayama together with Venerables Nirodha, Seri, and Hasapanna were ordained as Bhikkhunis by a dual Sangha act of Bhikkhus and Bhikkhunis in full accordance with the Pali Vinaya.

In 1997 Dhamma Cetiya Vihara in Boston was founded by Ven. Gotami of Thailand, then a 10 precept nun; when she received full ordination in 2000, her dwelling became America's first Theravada Buddhist bhikkhuni vihara. In 1998 Sherry Chayat, born in Brooklyn, became the first American woman to receive transmission in the Rinzai school of Buddhism. In 2006 Merle Kodo Boyd, born in Texas, became the first African-American woman ever to receive Dharma transmission in Zen Buddhism.

In 2010 the first Tibetan Buddhist nunnery in America (Vajra Dakini Nunnery in Vermont) was officially consecrated. It offers novice ordination and follows the Drikung Kagyu lineage of Buddhism. The abbot of the Vajra Dakini nunnery is Khenmo Drolma, an American woman, who is the first bhikkhuni in the Drikung Kagyu lineage of Buddhism, having been ordained in Taiwan in 2002. She is also the first westerner, male or female, to be installed as an abbot in the Drikung Kagyu lineage of Buddhism, having been installed as the abbot of the Vajra Dakini Nunnery in 2004. Also in 2010, in Northern California, four novice nuns were given the full bhikkhuni ordination in the Thai Theravada tradition, which included the double ordination ceremony. Bhante Gunaratana and other monks and nuns were in attendance. It was the first such ordination ever in the Western hemisphere. The following month, more bhikkhuni ordinations were completed in Southern California, led by Walpola Piyananda and other monks and nuns. The bhikkhunis ordained in Southern California were Lakshapathiye Samadhi (born in Sri Lanka), Cariyapanna, Susila, Sammasati (all three born in Vietnam), and Uttamanyana (born in Myanmar).

The first bhikkhuni ordination in Germany, the Theravada bhikkhuni ordination of German nun Samaneri Dhira, occurred on 21 June 2015 at Anenja Vihara. The first Theravada ordination of bhikkhunis in Indonesia after more than a thousand years occurred in 2015 at Wisma Kusalayani in Lembang, Bandung. Those ordained included Vajiradevi Sadhika Bhikkhuni from Indonesia, Medha Bhikkhuni from Sri Lanka, Anula Bhikkhuni from Japan, Santasukha Santamana Bhikkhuni from Vietnam, Sukhi Bhikkhuni and Sumangala Bhikkhuni from Malaysia, and Jenti Bhikkhuni from Australia.

Christianity

In the liturgical traditions of Christianity, including the Catholic Church, Eastern Orthodoxy and Oriental Orthodoxy, Lutheranism and Anglicanism, the term ordination refers more narrowly to the means by which a person is included in one of the orders of bishops, priests or deacons. Among these historic branches of Christianity, the episcopacy and priesthood have been reserved for men, although some argue that women have served as deacons in their own right and as apostles, though this is disputed by the Catholic and other historic Christian churches. This is distinguished from the process of consecration to religious orders, namely nuns and monks, which are typically open to women and men. Some Protestant denominations understand ordination more generally as the acceptance of a person for pastoral work.

Historians Gary Macy, Kevin J. Madigan and Carolyn Osiek report having identified documented instances of ordained women in the early Church. In 2021, excavations at the site of a 1600-year-old Byzantine basilica revealed mosaics that provided evidence of women serving primarily as diaconal ministers in early Christendom, although there has been speculation of other females in ministry as leaders of convents. Additionally, Paul's letter to the Romans, written in the first century AD, mentions a woman deacon:

In the late second century AD, the Montanist movement ordained women priests and bishops. In 494&nbsp;AD, in response to reports that women were serving at the altar in the south of Italy, Pope Gelasius I wrote a letter condemning female participation in the celebration of the Eucharist. Several textual ambiguities and silences have resulted in a variety of contrasting interpretations. Roger Gryson asserts that it is "difficult to form an idea of the situation which Pope Gelasius opposed" and observes that "it is regrettable that more details" about the situation are not available. Women continued to be ordained as deaconesses in the Byzantine Church through the 9th century AD, after which the practice fell into disuse.

The Protestant Reformation introduced the dogma that the authority of the Bible exceeds that of Catholic popes and other church figures. Once the Catholic hierarchy was no longer accepted as the sole authority, some denominations allowed women to preach. For example, George Fox founded the Quaker movement after stating he felt the "inner light" of Christ living in the believer was discovered in 1646. He believed that the inner light worked in women as well as in men, and said:

The ordination of women has once again been a controversial issue in more recent years with societal focus on social justice movements. 1 Timothy 2:11–15, and 1 Timothy 3:1–7, which they interpret as demanding male leadership in the Church. Some Evangelicals also look to the levitical priesthood and historic rabbinate, being male only. Other evangelical denominations officially authorize the full ordination of women in churches. Catholics may allude to Jesus Christ's choice of disciples as evidence of his intention for an exclusively male apostolic succession, as laid down by early Christian writers such as Tertullian and reiterated in the 1976 Vatican Declaration on the Question of the Admission of Women to the Ministerial Priesthood.

Supporters of women's ordination interpret the above-mentioned New Testament texts as being specific to certain social and church contexts and locations and addressing problems of church order in the early Church period. They regard Jesus as setting the example of treating women with respect, commending their faith and tasking them to tell others about him and Paul as treating women as his equals and co-workers. the female disciples of Jesus, and the women at the crucifixion who were the first witnesses to the Resurrection of Christ, as supporting evidence of the importance of women as pastoral or episcopal leaders in the early Church.

Catholic Church

The teaching of the Catholic Church, as emphasized by Pope John Paul II in the apostolic letter , is "that the Church has no authority whatsoever to confer priestly ordination on women and that this judgement is to be definitively held by all the Church's faithful". This teaching is embodied in the current canon law (1024), as well as the Catechism of the Catholic Church (1992), by the canonical statement: "Only a baptized man () validly receives sacred ordination." Insofar as priestly and episcopal ordination are concerned, the Catholic Church teaches that this requirement is a matter of divine law; it belongs to the deposit of faith and is unchangeable.

In 2007, the Holy See issued a decree stating that attempted ordination of a woman would result in automatic excommunication for the women and bishops attempting to ordain them, and in 2010 that attempted ordination of women is a "grave delict". An official Papal Commission ordered by Pope Francis in 2016 was charged with determining whether the ancient practice of having female deacons (deaconesses) is possible, provided they are non-ordained and that certain reserved functions of ordained male permanent or transitional deacons—proclaiming the Gospel at Mass, giving a homily, and performing non-emergency baptisms—would not be permitted for the discussed female diaconate. In October 2019, the Synod of Bishops for the Pan-Amazon region called for "married priests, pope to reopen women deacons commission." Pope Francis later omitted discussion of the issue from the ensuing documents.

Dissenters

Various Catholics have written in favor of ordaining women. Dissenting groups advocating women's ordination in opposition to Catholic teaching include Women's Ordination Worldwide, Catholic Women's Ordination, Roman Catholic Womenpriests, and Women's Ordination Conference. Some cite the alleged ordination of Ludmila Javorová in Communist Czechoslovakia in 1970 by Bishop Felix Davídek (1921–1988), himself clandestinely consecrated due to the shortage of priests caused by state persecution, as a precedent, although this ordination process was considered illicit and invalid by the Vatican The Catholic Church treats attempted ordinations of women as invalid and automatically excommunicates all participants.

Mariavites

thumb|Holy Mass celebrated by woman bishops and priestesses at the Mariavite monastery in [[Felicjanów, Płock County|Felicjanów (Poland)]]

Inspired by a mystically inclined nun, Feliksa Kozłowska, the Mariavite movement originally began as a response to the perceived corruption of the Catholic Church in the Russian Partition of 19th century Poland. The Mariavites, so named for their devotion to the Virgin Mary, attracted numerous parishes across Mazovia and the region around Łódź and at their height numbered some 300,000 people. Fearing a schism, the established church authorities asked for intervention from the Vatican. The Mariavites were eventually excommunicated by Papal Bull in 1905 and 1906. Their clergy, cut loose from the Catholic Church, found sanctuary with the Old Catholic Church and in 1909 the first Mariavite bishop, Michael Kowalski, was consecrated in Utrecht. Twenty years later, the now constituted Mariavite Church was riven by policy differences and a leadership struggle. Nevertheless, Archbishop Kowalski ordained the first 12 nuns as priests in 1929. He also introduced priestly marriage. The split in the church took effect, in part, over the place of the feminine in theology and the role of women in the life of the church. By 1935, Kowalski had introduced a "universal priesthood" that extended the priestly office to selected members of the laity. The two Mariavite churches survive to this day. The successors of Kowalski, who are known as the Catholic Mariavite Church and are based in the town of Felicjanów in the Płock region of Poland, are headed by a bishop who is a woman, although their numbers are dwarfed by the adherents of the more conventionally patriarchal Mariavites of Płock.

Eastern Orthodox Church

The Eastern Orthodox Church follows a line of reasoning similar to that of the Catholic Church with respect to the ordination of bishops and priests, and does not allow women's ordination to those orders. Thomas Hopko and Evangelos Theodorou have contended that female deacons were fully ordained in antiquity. K. K. Fitzgerald has followed and amplified Theodorou's research. Metropolitan Kallistos Ware wrote:

On 8 October 2004, the Holy Synod of the Orthodox Church of Greece voted to permit the appointment of monastic deaconesses—women to minister and assist at the liturgy within their own monasteries. The document however does not use the term , although the rites that are to be used are rites of ordination of clergy. In 2024, the Greek Orthodox Patriarchate of Alexandria ordained the first woman as deaconess in recent history.

Protestant

A justification given by many Protestants for female ministry is the fact that Mary Magdalene was chosen by Jesus to announce his resurrection to the apostles. A key theological doctrine for Reformed and most other Protestants is the priesthood of all believers—a doctrine considered by them so important that it has been dubbed by some as "a clarion truth of Scripture":