Papal encyclicals

Mater et magistra is the encyclical written by Pope John XXIII on the topic of "Christianity and Social Progress".

Caritas in Veritate (English: "Charity in Truth") is the third and last encyclical of Pope Benedict XVI, and his first social encyclical.

Pacem in terris (Peace on Earth) was a papal encyclical issued by Pope John XXIII on 11 April 1963 on nuclear non-proliferation.

Rerum novarum (from its first two words, Latin for "of revolutionary change"), or Rights and Duties of Capital and Labor, is an encyclical issued by Pope Leo XIII on 15 May 1891.

Centesimus annus (Latin for "hundredth year") is an encyclical which was written by Pope John Paul II in 1991 on the hundredth anniversary of Rerum novarum, an encyclical issued by Pope Leo XIII in 1891.

Laborem exercens (Latin: Through Work) is an encyclical written by Pope John Paul II in 1981, on human work.

Sollicitudo rei socialis (Latin: The social concern) is an encyclical promulgated by Pope John Paul II on 30 December 1987, on the twentieth anniversary of Populorum progressio.

Ut unum sint (Latin: 'That they may be one') is an encyclical by Pope John Paul II of May 25, 1995.

Quadragesimo anno (Latin for “In the 40th Year”) is an encyclical issued by Pope Pius XI on 15 May 1931, 40 years after Leo XIII's encyclical Rerum novarum.

Mit brennender Sorge () (German; English: With Burning Concern) On the Church and the German Reich is an encyclical of Pope Pius XI, issued during the Nazi era on 10 March 1937 (but bearing a date of Passion Sunday, 14 March).

Humanae vitae (Latin Of Human Life) is an encyclical written by Pope Paul VI and issued on 25 July 1968.

Fides et ratio (English: Faith and Reason) is an encyclical promulgated by Pope John Paul II on 14 September 1998.

Populorum progressio is the encyclical written by Pope Paul VI on the topic of "the development of peoples" and that the economy of the world should serve mankind and not just the few.