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Apostolic Constitutions

Solemn Papal Documents for Major Church Laws, Reforms, and Institutions

What Is an Apostolic Constitution?

An apostolic constitution is one of the most solemn forms of papal document.

Popes often use apostolic constitutions for major laws, reforms, structures, or decisions affecting the life and governance of the Church.

These documents can address matters such as canon law, the Roman Curia, papal elections, dioceses, liturgy, universities, and major ecclesial institutions.

Why Apostolic Constitutions Matter

Apostolic constitutions help order the visible life of the Church.

They show how the Pope exercises his office as shepherd of the universal Church, especially in matters of governance, discipline, and major ecclesial reform.

They are especially important for understanding how the Church is organized and how certain major laws are promulgated.

Featured Apostolic Constitutions

Browse Apostolic Constitutions by Pope

Helpful Topics

  • Canon Law: Sacrae Disciplinae Leges
  • Roman Curia: Pastor Bonus
  • Papal Elections: Universi Dominici Gregis
  • Church Governance: apostolic constitutions on dioceses, offices, and institutions
  • Church Reform: constitutions that reorganize major structures of Church life

How to Read Apostolic Constitutions

  • Notice the date and pope who issued the document.
  • Identify whether the document concerns doctrine, discipline, governance, or institutions.
  • Pay attention to legal language and numbered articles.
  • Read slowly, especially when the document establishes norms or laws.
  • Use the Catechism and Canon Law when the document references broader Church teaching or discipline.

Key Truths About Apostolic Constitutions

  • Apostolic constitutions are solemn papal documents.
  • They often establish or reform major Church laws and structures.
  • They can affect canon law, papal elections, the Roman Curia, dioceses, and institutions.
  • They should be read carefully because many contain juridical or disciplinary norms.
  • They help Catholics understand the visible governance of the Church.

Continue Learning

A good place to begin is: Sacrae Disciplinae Leges, the apostolic constitution promulgating the 1983 Code of Canon Law.