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A Traditional Catholic Seminary

Mater Dei Seminary is dedicated to forming faithful priests and preserving the sacred traditions of the Catholic Church.

About Mater Dei Seminary

Mater Dei Seminary is a traditional Catholic seminary dedicated to the formation of young men for the sacred priesthood, preparing them to serve as faithful and devoted shepherds of souls. Established in 1984, the seminary was originally located at Mt. St. Michael in Spokane, Washington, before being relocated in 1989 to Omaha, Nebraska, to better accommodate its growing mission.

In the fall of 2019, Mater Dei Seminary expanded further with the acquisition of a new property nestled in the rolling hills of southwestern Iowa. Spanning ten acres of peaceful countryside, the seminary offers an ideal retreat-like setting, fostering an environment of prayer, study, and contemplation. Designed to accommodate up to twenty seminarians, the campus provides a structured and disciplined formation program encompassing rigorous academic studies, deep spiritual development, and extensive liturgical training.

Mater Dei Seminary operates under the auspices of the Most Rev. Mark A. Pivarunas, CMRI, and the Religious Congregation of Mary Immaculate Queen (CMRI). Faithful to the Church’s sacred traditions, the seminary upholds the time-honored teachings of the Catholic faith, ensuring that each seminarian is well-formed in theology, philosophy, and pastoral care. Through a comprehensive curriculum and a strong emphasis on spiritual discipline, Mater Dei Seminary remains committed to preparing priests who will steadfastly uphold and defend the Catholic faith in a world in great need of truth and holiness.

Discover our mission and our commitment to priestly formation—learn more about us.

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News & Updates

Adsum: Seminary monthly newsletter—formation, announcements, and traditional Catholic spiritual reading.

Current Issue April 2026
Adsum cover — January 2026

Highlights

  • From the Rector: Bishop Pivarunas reflects on the liturgy of Holy Week, emphasizing what a great grace it is for seminarians to take part in these sacred ceremonies as part of their preparation for the priesthood. He also highlights the fitting restoration of the Easter Vigil to the evening hours by Pope Pius XII and reminds readers that the month of April is dedicated to the Holy Eucharist, encouraging gratitude for frequent Holy Communion and for the mitigated Eucharistic fast.
  • Holy Week at the Seminary: This issue features photographs and reflections from the seminary’s Holy Week ceremonies, including Tenebrae, the chanting of the Passion, the blessing of the Holy Oils on Holy Thursday, and the Easter Vigil with the blessing of the Paschal fire and candle.
  • Stories of the Blessed Sacrament: Excerpts from Rev. Joseph McDonnell, S.J., recount moving examples of devotion to the Blessed Sacrament, including the reverence shown by King Alphonsus XII of Spain and the heroic fidelity of an English Catholic who sacrificed greatly for the privilege of receiving Holy Communion.
  • Eucharistic Devotion: Through these historical accounts, readers are encouraged to grow in reverence for Our Lord in the Holy Eucharist, to appreciate more deeply the privilege of frequent Communion, and to show greater devotion in their conduct before the Blessed Sacrament.
  • Moral Theology Feature: In this month’s installment of Fr. Francis J. Connell’s Answers Moral Questions, the subject is honesty in sports, with an explanation of fair play, lawful strategy, and the moral obligation to avoid deliberate injury, cheating, and unsportsmanlike conduct in athletic competition.

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Seminary News Blog:

Preparations for Upcoming Ordinations

by Mater Dei SeminaryApril 22, 2026

Dear friends of the seminary, As the end of the academic year quickly approaches, there is much activity at Mater...

Beginning of the New Semester

by Mater Dei SeminaryJanuary 9, 2026

Dear friends of the seminary, With the Christmas season still fresh upon us, the seminary community has returned to its...

End of the Fall Semester & Ordinations

by Mater Dei SeminaryDecember 20, 2025

As the fall semester draws to its close, Mater Dei Seminary pauses to give thanks to Almighty God for the...

Advent and the Upcoming December Ordinations

by Mater Dei SeminaryNovember 27, 2025

As the first semester of the 2025–2026 scholastic year draws rapidly to a close, we give thanks to Almighty God...

New Scholastic Year 2025-2026

by Mater Dei SeminarySeptember 20, 2025

Dear friends of the seminary, The summer has quickly come to an end, and our seminarians have now returned for the...

In Gloria Dei: First Solemn High Mass 2025 — Now Available

by Mater Dei SeminaryJuly 31, 2025

Dear friends of the seminary, On the Feast of St. Catherine of Siena (30 April 2025), at Mary Immaculate Catholic Church...

Stay informed—read our seminary news blog!

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Recent Events:

Ordinations · Dec. 12, 2025
Ordinations & Rosary Procession · April–May 2025
Ordinations · December 12, 2024
New Scholastic Year · 2024–2025
Throughout the Years · 2015–2025
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Seminary Recordings

Sacred music & liturgical recordings from Mater Dei Seminary

New In Gloria Dei — First Solemn High Mass 2025
In Gloria Dei — First Solemn High Mass (2025)
First Solemn High Mass — Fr. Philip
First Solemn High Mass — Fr. Philip
First Solemn High Mass — Fr. Geckle
First Solemn High Mass — Fr. Geckle
In Praise of Mary
In Praise of Mary
Lenten Edition
Lenten Edition
Hymns to the Blessed Sacrament
Hymns to the Blessed Sacrament
Christmas Edition
Christmas Edition
The First Solemn High Mass (2020)
The First Solemn High Mass (2020)
Requiem
Requiem

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