World Mission Sunday

World Mission Sunday
Significance	Christian mission
Date	Penultimate Sunday of October
2025 date	October 19  (2025-10-19)
2026 date	October 18  (2026-10-18)
2027 date	October 17  (2027-10-17)
2028 date	October 15  (2028-10-15)
Frequency	Annual
Started by	Pontifical Mission Societies

World Mission Sunday is a day set aside for the Catholic Church throughout the world to publicly renew its commitment to the missionary movements, coordinated by the Pontifical Mission Societies, who are also known as Missio. It is celebrated on the penultimate (second-last) Sunday of October every year, (October 18, 2026; October 24, 2027). It was created by Pope Pius XI in 1926 as the day of prayer for missions. Closely related to Society for the Propagation of the Faith.

Pope Leo XIV Support

The theme, chosen by Pope Leo XIV for 2026, is "One in Christ, united in mission". This theme centers on unity in faith and a shared missionary calling, marking the 100th anniversary of the first World Mission Sunday. Pope Leo XIV, on June 1, 2026, said: "Thanks to the funds raised on World Mission Sunday, the Pontifical Society of the Propagation of the Faith is able to provide necessary help to the over 1,130 ecclesiastical circumscriptions that depend on the Dicastery for Evangelization, Section for First Evangelization and New Particular Churches, to help them establish necessary ecclesiastical infrastructures and support diverse missionary initiatives."

He is the first pontiff to ever record a personal video message for World Mission Sunday. This was done in part because he was a missionary himself in Peru.

Rooted in Canon Law

The annual celebration has been codified by the Catholic Church in Canon Law 791:

Can. 791 To foster missionary cooperation in individual dioceses:

1/ missionary vocations are to be promoted;

2/ a priest is to be designated to promote effectively endeavors for the missions, especially the Pontifical Missionary Works;

3/ an annual day for the missions is to be celebrated;

4/ a suitable offering for the missions is to be contributed each year and sent to the Holy See.

This makes the annual collection for the missionary work of the Church the only canonically mandated collection.

An Annual, Universal Celebration

World Mission Sunday is the one Sunday each year when the entire Catholic Church comes together in prayer, reflection, and sacrificial giving for the missions. On that day, there is a global collection taken in every parish, in every diocese, in every country for the support of the missions.

Established in 1926 by Pope Pius XI, World Mission Sunday is coordinated by the Society for the Propagation of the Faith, one of the four Pontifical Mission Societies. Its purpose is to sustain more than 1,124 mission territories — places where the Church is young, often materially poor, and sometimes persecuted, but where the seed of the Gospel is being planted and nourished.

The Society for the Propagation of the Faith provides support for pastoral and catechetical programs, church construction, healthcare, and education in mission territories.

A Mission Rooted in History

World Mission Sunday traces its roots to Blessed Pauline Jaricot, a 19th-century French laywoman who mobilized prayer and support for the Church's missionary efforts. Her first fundraising circles helped support the Church in the United States — then a mission territory itself — until 1908. Today, U.S. Catholics return that generosity by supporting the missionary work of the Church throughout Africa, Asia, Oceania, Latin America, and parts of Europe and the Middle East.

A Day That Makes a Real Impact

Every year, the Vatican gathers together to discuss the use of the funds raised globally.

Pope Leo said in June 2026:

For one hundred years, this day has been set apart for prayer, reflection and contributing to the Church’s mission of evangelization, especially in areas where the proclamation of the Gospel is only just beginning and where the Church is still young.

Thanks to the generosity of Catholics in the United States, in 2024, World Mission Sunday helped the following:

Catholic Seminarians

In 2025, The Pontifical Mission Societies supported the formation of 87,498 seminarians, fully 41% of all Catholic seminarians worldwide.

World Mission Sunday plays a pivotal role in helping Catholic seminarians worldwide:  

1. World Mission Sunday supports 1,130 mission dioceses around the world.  These mission dioceses are home to 2/5 of all Catholic seminarians worldwide. The World Mission Sunday funds are used to underwrite the basic physical footprint that keeps missionary work going: buildings where priests live, seminaries where seminarians are formed, diocesan centers where formation and pastoral work can happen, and churches where Holy Mass can be celebrated, often for the first time.  

2. The Society for the Propagation of the Faith, which oversees the funds from World Mission Sunday, works closely with the Society of St. Peter the Apostle, which is another one of the Pontifical Mission societies.  Some of the funds raised on World Mission Sunday are used to build, expand, and renovate seminaries in mission dioceses.  The funds raised for the Society of St. Peter the Apostle are used to cover the daily operations and running costs of these seminaries.  In 2024, the World Mission Sunday funds helped build, expand, and/or renovate 44 seminaries located in mission territories.

Religious Sisters

The World Mission Sunday collection helps sustain the work of over 250,000 religious sisters. That's equivalent to roughly 50% of all religious sisters in the world. These women chose to live in harsh conditions, on the front lines, helping the missionary work of the Church to continue.

Missionary Catechists

The World Mission Sunday collection helps train over 840,000 missionary catechists a year. With few priests and expansive mission dioceses, the priests cannot be present everywhere at once. Thus, lay missionary catechists are the vital link between the people in the region and their pastors. These men and women gather the people, preach the Gospel, and prepare the faithful to receive the sacraments.

Church Infrastructure

In an average year, World Mission Sunday helps to fund over 900 infrastructure-related projects for the Church! In 2024 alone, 751 new churches were built.

Biblical Roots

The work of the Catholic Missions is still an ongoing task for the whole Church. For this reason, the World Mission Sunday efforts are also a time to remember the last words of Jesus to his faithful. Matthew's Gospel records the last words of Jesus as follows:

Go therefore and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit, and teaching them to obey everything that I have commanded you. And remember, I am with you always, to the end of the age. Matthew 28:19-20