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John S. Siemianowski


John Steven Siemianowski
Auxiliary Bishop of Chicago
Titular Bishop of Gratianopolis
ArchdioceseChicago
AppointedDecember 20, 2024
InstalledFebruary 26, 2025
Other post(s)Titular Bishop of Gratianopolis
Orders
OrdinationMay 20, 1989
ConsecrationFebruary 26, 2025
by Blase J. Cupich, Robert Gerald Casey, and Jeffrey S. Grob
Personal details
Born (1960-05-26) May 26, 1960 (age 64)
Styles of
John S. Siemianowski
Reference style
Spoken styleYour Excellency
Religious styleBishop

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

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]

See also

References

Episcopal succession

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