The Constitutiones Sanctæ Matris Ecclesiæ (), informally known as the Constitutiones Aegidianae (English: Egidian Constitutions, Italian: Costituzioni egidiane), were six books of law which formed the first historic constitution of the Papal States.
The Fundamental Laws of the Catholic Church (), referred to informally as the Ecclesiastical Constitutions of the Holy Mother Church (), or simply the Egidian Constitutions (English: Egidian Constitutions, Italian: Costituzioni egidiane), were six books that formed the first constitution of the Papal States.