Pope Leo XIV Appoints Sister Mary Barron to Lead Pontifical Mission Societies
Sister Mary Teresa Barron becomes the first woman to head the Church's global missionary network, taking office on January 4, 2027, as part of a broader pattern of women in senior Vatican roles.
Pope Leo XIV has appointed Sister Mary Teresa Barron as adjunct secretary of the Dicastery for Evangelization in the Section for First Evangelization and New Particular Churches, entrusting her simultaneously with the presidency of the Pontifical Mission Societies. The Holy See Press Office announced that the Irish religious sister will assume her new responsibilities on January 4, 2027.
Barron, who has served as superior general of the Missionary Sisters of Our Lady of the Apostles since 2018, becomes the first woman to lead the pontifical missionary network, which operates in more than 120 countries. In her new role, she will coordinate and promote missionary cooperation among local Churches worldwide, particularly in regions where the Church is growing and facing significant pastoral challenges. The appointment places her among the highest-ranking women in the Roman Curia.
Born in Donegal, Ireland, on November 7, 1968, Barron holds a master's degree in health administration from Dublin's Institute of Public Administration and a master's degree in international development from the Kimmage Development Studies Centre. Her congregation is dedicated to evangelization and missionary service, especially in several African countries. From 2022 to 2025, she served as president of the Service of Documentation and Study on Global Mission (SEDOS), and from 2023 to 2025 she led the International Union of Superiors General (UISG), an organization representing approximately 600,000 religious sisters in 80 countries.
During a press conference following Synod on Synodality discussions in October 2024, Barron addressed the question of women who experience what she described as a call to priesthood or diaconate. «I think we have to look at the question very much from … the Spirit. 'Is the Spirit calling women?' Because some women do sense a call to priesthood or diaconate,» she said. She added that even if the Church is not currently considering ordained ministry for women, discussion on the issue should continue. Barron also emphasized that opportunities for women to assume governance positions in the Church depend in large part on cultural factors, noting that women can take on broader leadership roles in some societies while doing so remains more difficult in others. «I think we have to look at broader than just can or can we not from a theological or a canonical point of view, but in terms of the spirit calling to ministry today and in terms … of the needs of mission today,» she said, calling for continued reflection on whether those calls exist and whether the discussion can continue.
Her appointment is part of a series of appointments by Pope Leo XIV that have strengthened the trend of placing women in senior Vatican leadership positions. The pope's first major appointment of a woman came on May 22, 2025, when he named Sister Tiziana Merletti secretary of the Dicastery for Institutes of Consecrated Life and Societies of Apostolic Life. On April 1, 2026, Paola Fanelli was appointed director of human resources for the Holy See. On June 2, 2026, Leo XIV named María Montserrat Alvarado, currently president and chief operating officer of EWTN News, as prefect of the Dicastery for Communication. The Mexican-American journalist and scholar is scheduled to become, on November 1, the first woman to lead the department responsible for coordinating the Holy See's communications system, including Vatican News, Vatican Radio, L'Osservatore Romano, and Vatican digital platforms. On June 30, the pope appointed Salesian Sister Alessandra Smerilli, 51, as prefect of the Dicastery for Promoting Integral Human Development. Smerilli, a professor of political economy, had served as secretary of the dicastery since 2021 and was already the first woman to reach that level within the department.
On Monday, Pope Leo XIV received representatives of the Association of Vatican Lay Workers and the Women in the Vatican Association. During the meeting, he said that «the presence of women» in the Vatican «is a valuable asset that must be increasingly recognized and appreciated.» The pope added that women «bring not only a special sensitivity toward people and relationships but also the full range of human, professional, and intellectual talents inherent in the female experience and perspective.»
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