Gregorian may refer to: *The thought or ideology of

Pope Gregory I Pope Gregory I ( la, Gregorius I; – 12 March 604), commonly known as Saint Gregory the Great, was the bishop of Rome from 3 September 590 to his death. He is known for instigating the first recorded large-scale mission from Rome, the Gregori ...

or Pope Gregory VII (also called ''Gregorianism'') *Things named for

: **

Gregorian chant Gregorian chant is the central tradition of Western plainchant, a form of monophonic, unaccompanied sacred song in Latin (and occasionally Greek) of the Roman Catholic Church. Gregorian chant developed mainly in western and central Europe durin ...

, the central tradition of Western plainchant, a form of monophonic, unaccompanied sacred song of the western Roman Catholic Church **

Gregorian mass Pope Gregory I ( la, Gregorius I; – 12 March 604), commonly known as Saint Gregory the Great, was the bishop of Rome from 3 September 590 to his death. He is known for instigating the first recorded large-scale mission from Rome, the Gregoria ...

Brotherhood of Saint Gregory The Brotherhood of Saint Gregory is a community of friars within the Anglican Communion. The community's members, known as ''Gregorians'', include clergy and laymen. Since 1987 there has also been a parallel order of sisters, the Sisters of Sain ...

, a community of friars within the Anglican Communion. The community's members, known as "Gregorians", include clergy and laymen. Since 1987 there has also been a parallel order of sisters, the Sisters of Saint Gregory *The

Gregorian Reform The Gregorian Reforms were a series of reforms initiated by Pope Gregory VII and the circle he formed in the papal curia, c. 1050–80, which dealt with the moral integrity and independence of the clergy. The reforms are considered to be nam ...

(Pope Gregory VII), a series of reforms initiated by Pope Gregory VII and the circle he formed in the papal curia, c. 1050–80, which dealt with the moral integrity and independence of the clergy *Things named for

Pope Gregory XIII Pope Gregory XIII ( la, Gregorius XIII; it, Gregorio XIII; 7 January 1502 – 10 April 1585), born Ugo Boncompagni, was head of the Catholic Church and ruler of the Papal States from 13 May 1572 to his death in April 1585. He is best known for ...

: **

Gregorian calendar The Gregorian calendar is the calendar used in most parts of the world. It was introduced in October 1582 by Pope Gregory XIII as a modification of, and replacement for, the Julian calendar. The principal change was to space leap years dif ...

, internationally the most widely used civil calendar. It is named after Pope Gregory XIII, who introduced it in October 1582 **

Pontifical Gregorian University The Pontifical Gregorian University ( it, Pontificia Università Gregoriana; also known as the Gregorian or Gregoriana,) is a higher education ecclesiastical school ( pontifical university) located in Rome, Italy. The Gregorian originated as ...

, Rome *The

Armenian Apostolic Church , native_name_lang = hy , icon = Armenian Apostolic Church logo.svg , icon_width = 100px , icon_alt = , image = Էջմիածնի_Մայր_Տաճար.jpg , imagewidth = 250px , a ...

, sometimes called the Gregorian Church after Saint Gregory the Illuminator *The

Gregorian telescope The Gregorian telescope is a type of reflecting telescope designed by Scottish mathematician and astronomer James Gregory in the 17th century, and first built in 1673 by Robert Hooke. James Gregory was a contemporary of Isaac Newton. Both often ...

, named after James Gregory *

Gregorian (band) Gregorian is a German band headed by Frank Peterson that performs Gregorian chant-inspired versions of modern pop and rock songs. The band features both vocal harmony and instrumental accompaniment. They competed in Unser Lied für Stockholm, ...

, German band that performs Gregorian chant-inspired versions of modern pop and rock songs *

Gregorian Antiphonary The Gregorian Antiphonary was an early Christian antiphonary, i.e. book of choral music to be sung antiphonally in services; it is associated traditionally with Pope Gregory I. Background At the early period in question, oral tradition may hav ...

, an early Christian antiphonary, i.e. book of choral music to be sung antiphonally in services; it is associated traditionally with Pope Gregory I *

Gregorian Consortium The Gregorian Consortium is a collaborative association of three pontifical universities/institutes in Rome. In 1930 the motu proprio ''Quod maxime'' of Pope Pius XI associated the Pontifical Gregorian University (Greg), the Pontifical Biblical In ...

, a collaborative association of three pontifical universities/institutes in Rome *

Gregorian Sacramentary The Gregorian Sacramentary is a 10th-century illuminated Latin manuscript containing a sacramentary. Since the 16th century it has been in the Vatican Library, shelfmarVat. Lat. 3806 Description It is made up of 307 leaves written in Carolingian mi ...

, a 10th-century illuminated Latin manuscript containing a sacramentary. Since the 16th century it has been in the Vatican Library as ''Lat. 3806'' *

Gregorian Tower The Gregorian Tower ( it, Torre Gregoriana) or Tower of the Winds ( it, Torre dei Venti) is a square tower and early modern observatory located above the Gallery of Maps, which connects the Villa Belvedere with the Apostolic Palace in Vatican ...

, a round tower located above the Gallery of Maps, which connects the Villa Belvedere with the Apostolic Palace in Vatican City *

Gregorian (horse) Gregorian (25 April 1976 – 2002) was an American-bred, Irish-trained Thoroughbred racehorse and sire. He was a very impressive winner of his only race as a two-year-old but ran third on his only appearance at three. He emerged as a top-cla ...

People

Arthur T. Gregorian Arthur T. Gregorian, (1909 – January 14, 2003), was a Greater Boston oriental rug dealer and author of books on oriental rugs. He is considered by some to be the world's leading collector of rare, inscribed Armenians, Armenian rugs. Early l ...

(1909–2003), Greater Boston oriental rug dealer and author of books on oriental rugs, and considered to be the world's leading collector of rare, inscribed Armenian rugs *

Hrach Gregorian Hrach Gregorian (born 1949 in Tehran, Iran) is an American political consultant, educator, and writer. His work in both the private and public sectors has been mainly focused in the field of international conflict management and post-conflict pea ...

(born 1950), American political consultant, educator, and writer *

Joyce Ballou Gregorian Joyce Ballou Gregorian Hampshire (July 5, 1946 – April 29, 1991) was an American author, expert on Oriental rugs, and horse breeder. Life Joyce Ballou Gregorian was born in Boston, Massachusetts, the third child of Phebe Ballou, of New England ...

(1946–1991), American author, expert on Oriental rugs, and lover of Arabian horses *

Mike Gregorian Mike Gregorian is an American former soccer player who earned one cap with the U.S. national team in 1988. Youth and college Gregorian grew up in Culver City, California where he played forward for the Fram club of Culver-Palisades which won ...

, American former soccer player who earned one cap with the U.S. national team in 1988 *

Vartan Gregorian Vartan Gregorian; fa, وارتان گرگوریان (April 8, 1934 – April 15, 2021) was an Armenian-American academic, educator, and historian. He served as president of the Carnegie Corporation from 1997 to 2021. An Armenian born in Ira ...

(1934–2021), Iranian-born Armenian-American academic, serving as the president of Carnegie Corporation of New York *

Gregorian Bivolaru Gregorian Bivolaru also known as Magnus Aurolsson and nicknamed Grieg, Grig or, by the press, Guru (born 12 March 1952) is the founder of the Movement for Spiritual Integration into the Absolute (MISA). In 2005, the Supreme Court of Sweden agreed ...

(born 1952), founder of the Movement for Spiritual Integration into the Absolute (MISA) {{disambiguation, surname Armenian-language surnames