An apostolic constitution (Latin: constitutio apostolica) is the highest level of decree issued by the Pope. The use of the term constitution comes from Latin constitutio, which referred to any important law issued by the Roman emperor, and is retained in church documents because of the inheritance that the canon law of the Roman Catholic Church received from Roman law.
By their nature, apostolic constitutions are addressed to the public. Generic constitutions use the title apostolic constitution, and treat on solemn matters of the church, such as the promulgation of laws or definitive teachings. The forms dogmatic constitution and pastoral constitution are titles sometimes used to be more descriptive as to the document's purpose.
Apostolic constitutions are issued as papal bulls because of their solemn, public form. The second highest category of decree, below an apostolic constitution, is an encyclical letter.
Generic constitutions contain the following introduction:
[Pope name], BishopServant of the Servants of GodFor an everlasting memorial/eternal memory/etc.
16th century
Quo primum (1570) Pius V's Apostolic Constitution on the Tridentine Mass19th century
Ineffabilis Deus (1854) Pius IX's Dogmatic Constitution on the Immaculate Conception of MaryAd Universalis Ecclesiae (1862) Pius IX's Papal Constitution dealing with the conditions for admission to religious orders of men in which solemn vows are prescribedRomanos Pontifices (1881) by Pope Leo XIII20th century
Bis Saeculari (1948), Pope Pius XII on Sodality of Our LadyMunificentissimus Deus (1950) Pope Pius XII's Dogmatic Constitution on the Assumption of MaryExsul Familia (1952) Pope Pius XII's Constitution on MigrationVeterum sapientia (1962) Pope John XXIII's Apostolic Constitution on the promotion of the study of LatinDei verbum (1965) Pope Paul VI's Dogmatic Constitution on Divine RevelationPaenitemini (1966) Pope Paul VI's Apostolic Constitution on Fasting and Abstinence in the Roman Catholic ChurchMissale Romanum (1969) Pope Paul VI's Apostolic Constitution on the revised liturgyRomano Pontifici eligendo (1975) Pope Paul VI's Apostolic Constitution on the election of the Roman pontiffUt sit (1982) Pope John Paul II's Apostolic Constitution raising Opus Dei (Latin for "The Work of God") to the rank of a Personal Prelature (similar to a diocese, but grouping people by some peculiar pastoral reason instead of by where they live)Sacrae Disciplinae Leges (1983) Pope John Paul II's constitution instituting the 1983 Code of Canon LawPastor Bonus (1988) — Pope John Paul II's rules on the re-organisation of the Roman CuriaEx corde ecclesiae (1990) — John Paul II's rules on Catholic universitiesFidei depositum (1992) Pope John Paul II's Apostolic Constitution on the new Catechism of the Catholic ChurchUniversi Dominici gregis (1996)—Pope John Paul II's rules on electing the Roman Pontiff (the Pope)21st century
Anglicanorum Coetibus (2009) - Pope Benedict XVI's rules for providing for Personal Ordinariates for Anglican laypeople and clergy wishing to enter into full communion with the Catholic ChurchVultum Dei quaerere (2016) - Pope Francis' rules about women's contemplative life