Roman Catholic Church Councils

The Council of 1123 is reckoned in the series of Ecumenical councils by the Catholic Church.

The Second Council of the Lateran is believed to have been the Tenth Ecumenical Council by Roman Catholics.

The Council of Ephesus was a council of Christian bishops convened in Ephesus (near present-day Selçuk in Turkey) in AD 431 by the Roman Emperor Theodosius II.

The First Council of Nicea (/naɪˈsiːə/; Greek: Νίκαια [ˈni:kaɪja]) was a council of Christian bishops convened in the Bithynian city of Nicaea (currently called Iznik, Bursa province, Turkey) by the Roman Emperor Constantine I in AD 325.

The First Council of Constantinople (Ancient Greek: Κωνσταντινούπολις Konstantinoúpolis) was a council of Christian bishops convened in Constantinople in AD 381 by the Roman Emperor Theodosius I.

The Second Council of Constantinople is the fifth of the first seven ecumenical councils recognized as such by both Western Christianity and Eastern Christianity.

The Second Council of Nicaea is recognized as the seventh of the first seven ecumenical councils by both West and East.

The Third Council of Constantinople, counted as the Sixth Ecumenical Council by the Orthodox Church, the Catholic Church and other Christian groups, met in 680/681 and condemned monoenergism and monothelitism as heretical and defined Jesus Christ as having two energies and two wills (divine and human).

The Council of Trent (Latin: Concilium Tridentinum), held between 1545 and 1563 in Trento (Trent) and Bologna, northern Italy, was one of the Roman Catholic Church's most important ecumenical councils.

The Council of Jerusalem or Apostolic Council was held in Jerusalem around 50 AD.

The Council of Vienne was the fifteenth Ecumenical Council of the Roman Catholic Church that met between 1311 and 1312 in Vienne.

The Council of Constance is the 15th century ecumenical council recognized by the Roman Catholic Church, held from 1414 to 1418.

The First Council of Lyon (Lyons I) was the thirteenth ecumenical council, as numbered by the Catholic Church, taking place in 1245.

The Second Council of Lyon was the fourteenth ecumenical council of the Catholic Church, convoked on 31 March 1272 and convened in Lyon, France, in 1272–1274.

The Fourth Council of the Lateran was convoked by Pope Innocent III with the papal bull Vineam domini Sabaoth of 19 April 1213, and the Council gathered at Rome's Lateran Palace beginning 11 November 1215.

The Third Council of the Lateran met in March 1179 as the eleventh ecumenical council.

The Fifth Council of the Lateran (1512–1517) is the Eighteenth Ecumenical Council to be recognized by the Roman Catholic Church and the last one before the Protestant Reformation.

The Fourth Council of Constantinople (Roman Catholic) was the eighth Catholic Ecumenical Council held in Constantinople from October 5, 869, to February 28, 870.

A legatine council or legatine synod is an ecclesiastical council or synod that is presided over by a papal legate.