John S. Siemianowski

Last updated March 08, 2025

His Excellency, The Most Reverend John Steven Siemianowski
Auxiliary Bishop of Chicago Titular Bishop of Gratianopolis
Archdiocese	Chicago
Appointed	December 20, 2024
Installed	February 26, 2025
Other post(s)	Titular Bishop of Gratianopolis
Orders
Ordination	May 20, 1989
Consecration	February 26, 2025 by Blase J. Cupich, Robert Gerald Casey, and Jeffrey S. Grob
Personal details
Born	(1960-05-26) May 26, 1960 (age 64) Chicago, Illinois
Motto	Make All Things New

Styles of John S. Siemianowski

Reference style	His Excellency The Most Reverend
Spoken style	Your Excellency
Religious style	Bishop

John Steven Siemianowski (born May 26, 1960) is an American priest of the Catholic Church who serves as auxiliary bishop for the Archdiocese of Chicago.

Early life
Episcopacy
See also
References
External links
Episcopal succession

Early life

Siemianowski was born in Chicago on May 26, 1960, into a family of Polish immigrants.^[1] He earned a degree in environmental sciences from Southern Illinois University. He went on to attend Mundelein Seminary.

Siemianowski was ordained to the priesthood for the Archdiocese of Chicago on May 20, 1989.^[2]

Episcopacy

Pope Francis appointed Siemianowski auxiliary bishop for the Archdiocese of Chicago, assigning him the titular see of Gratianopolis on December 20, 2024.^[2]^[3]^[4] Siemianowski was consecrated as a bishop on February 26, 2025.^[5]

References

↑ "Ks. Robert Fedek i ks. John Siemianowski zostaną biskupami pomocniczymi Archidiecezji Chicagowskiej". DS (in Polish).
1 2 "Resignations and Appointments, 20.12.2024" . Retrieved December 20, 2024.
↑ "Pope Francis Names New Auxiliary Bishops of Chicago" . Retrieved December 20, 2024.
↑ "Pope Francis Names Five New Auxiliary Bishops for the Archdiocese of Chicago" . Retrieved December 20, 2024.
↑ "Pope Francis Names Five New Auxiliary Bishops for the Archdiocese of Chicago". Archdiocese of Chicago.

External links

Roman Catholic Archdiocese of Chicago official site

Episcopal succession

Catholic Church titles
Preceded by -	Auxiliary Bishop of Chicago 2025-present	Succeeded by -

Roman Catholic Archdiocese of Chicago

v t e Ordinaries of the Archdiocese of Chicago
Bishops	William Quarter James Oliver Van de Velde Anthony O'Regan James Duggan
Coadjutor bishop	Thomas Patrick Roger Foley
Archbishops	Patrick Feehan James Edward Quigley George Mundelein Samuel Stritch Albert Gregory Meyer John Cody Joseph Bernardin Francis George Blase J. Cupich
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v t e Churches in the Archdiocese of Chicago
Cathedral	Holy Name Cathedral
Basilicas	Basilica of Saint Hyacinth Our Lady of Sorrows Basilica Queen of All Saints Basilica
Churches	List List of churches in the Roman Catholic Archdiocese of Chicago Chicago Holy Cross Church Holy Family Church Holy Innocents Church Holy Trinity Church Church of the Immaculate Conception Immaculate Heart of Mary Church Nativity of Our Lord Church Notre Dame de Chicago Old St. Patrick's Church Sacred Heart Church St. Barbara Church St. Clement Church St. Edward's Church St. Hedwig's Church St. Ita's Church St. John Cantius Church St. Josaphat Church St. Joseph Church St. Jerome Croatian Church St. Ladislaus Church St. Mary of Perpetual Help Church St. Mary of the Angels Church St. Mary of the Woods Catholic Church St. Michael's Church, Old Town St. Michael the Archangel Church, South Shore St. Stanislaus Kostka Church St. Thomas the Apostle Church St. Vincent de Paul Church Church of St. Vitus St. Wenceslaus Church Cook County Holy Family Church, North Chicago St. Anne Church, Barrington St. Mary of Częstochowa Church, Cicero Our Lady of Perpetual Help Church, Glenview SS. Cyril and Methodius Church, Lemont St. James Church, Lemont St. Martha Church, Morton Grove St. John Brebeuf Church, Niles St. Joseph Church, Wilmette
Chapels	Madonna Della Strada Chapel

v t e Education in the Archdiocese of Chicago
Higher education	DePaul University Dominican University Loyola University Chicago Saint Xavier University Stritch School of Medicine
Seminaries	Catholic Theological Union Saint Joseph College Seminary University of Saint Mary of the Lake Casa Jesus
High schools	Chicago Brother Rice High School Christ the King Jesuit College Prep High School Cristo Rey Jesuit High School De La Salle Institute DePaul College Prep Hales Franciscan High School Holy Trinity High School Josephinum Academy Leo Catholic High School Marist High School Mother McAuley Liberal Arts High School Mount Carmel High School Notre Dame High School for Girls Our Lady of Tepeyac High School Resurrection High School St. Benedict High School St. Francis de Sales High School St. Ignatius College Preparatory School St. Patrick High School St. Rita of Cascia High School Cook County St. Viator High School, Arlington Heights St. Laurence High School, Burbank Marian Catholic High School, Chicago Heights Nazareth Academy, La Grange Park Mount Assisi Academy, Lemont Notre Dame College Prep, Niles Fenwick High School, Oak Park Trinity High School, River Forest Guerin College Preparatory High School, River Grove Seton Academy, South Holland St. Joseph High School, Westchester Loyola Academy, Wilmette Regina Dominican High School, Wilmette Lake County Woodlands Academy of the Sacred Heart, Lake Forest Carmel High School, Mundelein Cristo Rey St. Martin College Prep, Waukegan
Former	Higher education Barat College Lexington College St. Viator College High schools Academy of Our Lady, Chicago Archbishop Quigley Preparatory Seminary, Chicago Immaculata High School, Chicago Maria High School, Chicago Queen of Peace High School, Burbank St. Gregory the Great High School, Chicago St. Scholastica Academy, Chicago Saint Louise de Marillac High School, Northfield Grade school Our Lady of the Angels School, Chicago

v t e Clergy of the Archdiocese of Chicago
Auxiliary bishops	Alfred Leo Abramowicz Mark Andrew Bartosic Kevin M. Birmingham Robert Gerald Casey Edwin Michael Conway William Edward Cousins Michael Dempsey Gustavo García-Siller John R. Gorman Raymond E. Goedert Thomas Joseph Grady Wilton Daniel Gregory Jeffrey S. Grob Nevin William Hayes Ronald Aldon Hicks Raymond Peter Hillinger Edward Francis Hoban Thad J. Jakubowski Francis J. Kane Gerald Frederick Kicanas Jerome E. Listecki Robert J. Lombardo Timothy Joseph Lyne John R. Manz Alexander Joseph McGavick William Edward McManus William David O'Brien John L. May George V. Murry Cletus F. O'Donnell Thomas Paprocki Joseph N. Perry George J. Rassas Plácido Rodriguez Alberto Rojas Bernard James Sheil John George Vlazny Andrew Peter Wypych Robert Fedek José Maria Garcia Maldonado Timothy J. O'Malley John S. Siemianowski Lawrence J. Sullivan
Priests who became bishop elsewhere	Peter Joseph Baltes Robert Emmet Barron Romeo Roy Blanchette Stanislaus Vincent Bona Edward Braxton Maurice Francis Burke Edmund Michael Dunne Edward Joseph Dunne Edward Egan James Aloysius Griffin William Richard Griffin John Richard Keating James Patrick Keleher Moses E. Kiley Francis Joseph Magner Paul Marcinkus John McMullen Martin Dewey McNamara Peter Muldoon William Aloysius O'Connor Thomas Joseph Murphy Ernest John Primeau Paul Peter Rhode Patrick William Riordan Edward James Slattery Louis Tylka Raymond James Vonesh Aloysius John Wycisło
Priests	John George Alleman Thaddeus J. Butler Donald Martin Carroll George Clements Daniel Coughlin John Joseph Egan Andrew Greeley George G. Higgins Reynold Henry Hillenbrand Michael Pfleger Jeremiah J. Rodell

Other: 28th International Eucharistic Congress

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