Pastor bonus (Latin: "The Good Shepherd") is an apostolic constitution promulgated by Pope John Paul II on 28 June 1988. It instituted a number of reforms in the process of running the central government of the Roman Catholic Church, as article 1 states "The Roman Curia is the complex of dicasteries and institutes which help the Roman Pontiff in the exercise of his supreme pastoral office for the good and service of the whole Church and of the particular Churches. It thus strengthens the unity of the faith and the communion of the people of God and promotes the mission proper to the Church in the world".
Pastor bonus laid out in considerable detail the organization of the Roman Curia, specifying precisely the names and composition of each dicastery, and enumerating which competencies, or responsibilities, each dicastery was charged with overseeing. It replaced the previous governing document, Regimini Ecclesiæ universæ, which was released by Paul VI in 1967.
It delineated the roles of the Secretariat of State, Congregations, Tribunals, Pontifical Councils, Administrative Services and Pontifical Commissions of the Roman Curia. It also established the norms for the Ad limina visits of bishops to Rome and the relationship between the Holy See and the particular Churches and episcopal conferences.
Among the changes formulated in the constitution was the re-integration of the Council for Public Affairs of the Church into the Secretariat of State as the Section for Relations with States (the Second Section). The Council for Public Affairs of the Church had previously been a section of the Secretariat of State, but was made an independent dicastery by Pope Paul VI in 1967.