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Thanh Thai Nguyen

Auxiliary Bishop of Orange
Auxiliary Bishop
1953
1991
Ordained
2017
Consecrated Bishop
Orange
Diocese
United States
Country
The Life

Thanh Thai Nguyen was born in Nha Trang, Vietnam, on April 7, 1953, the second oldest of 11 children. He entered St. Joseph Seminary in 1966, but his formation was interrupted by the communist takeover in 1975, when he and his fellow seminarians were forced into hard labor in the rice fields. In 1979 he fled with 26 members of his extended family in a small motorboat from Cam Ranh Bay, survived a tropical storm and 18 days at sea praying the Rosary morning and evening, and reached the Philippines, then spent ten months in a refugee camp before reaching Texas in 1980.

In the United States he worked at Catholic Charities in Hartford, Connecticut, earned a bachelor's degree cum laude from Merrimack College, and took his first vows with the Missionaries of Our Lady of La Salette in 1987. He graduated from Weston Jesuit School of Theology in 1990 and was ordained on May 11, 1991. After two assignments in Atlanta, he moved to the Diocese of St. Augustine, Florida, in 1996, was incardinated there in 1999, served Christ the King Parish in Jacksonville, helping build a Vietnamese Center, and from 2013 was pastor of St. Joseph Parish in Jacksonville, that diocese's largest parish, with 4,000 families.

Pope Francis appointed him an auxiliary bishop of Orange on October 6, 2017, and Bishop Kevin Vann ordained him bishop on December 19, 2017, at St. Columban Church in Garden Grove. He now serves jointly with Bishop Timothy Freyer as a vicar general, ministering to 1.3 million Catholics. His episcopal motto, from Psalm 23, is 'He leads me,' and parishioners know him for his guitar playing and for tennis.

Major Works & Initiatives
Vicar general of Orange (jointly, since 2017)
He serves jointly with Bishop Freyer as vicar general of Orange, ministering in a diocese that includes the largest Vietnamese community outside Vietnam.
Vietnamese ministry at Christ the King, Jacksonville
At Christ the King in Jacksonville he helped lead the effort to build a Vietnamese Center and preserve Vietnamese cultural traditions.
Pastor of St. Joseph, Jacksonville (2013-2017)
From 2013 until his appointment to Orange he was pastor of St. Joseph Parish in Jacksonville, the largest parish in the Diocese of St. Augustine, with 4,000 families.
The Old Mass, See by See
Orange2017-12-19 – presentauxiliaryNo act of his own
What he inheritedOrange's old-Mass provision under Bishop Kevin Vann: on July 28, 2021, Vann authorized any priest already celebrating Mass according to the 1962 Roman Missal, in public or privately, to continue. The diocesan board row records that Vann permitted all four sites in 2021, but that after the 2023 rescript the parish Mass at St. Mary's by the Sea in Huntington Beach was ended. Those decisions are Vann's, signed by him. Nguyen, his auxiliary since 2017 and joint vicar general, has no decree, homily or public word of his own on the old Mass on record.
Since the SSPX decree of 2 July 2026: No statement recorded as of 2026-10-24.
Reviewed 2026-10-24Confidence: high
Domus Dei’s Verdict
The Bishop & the Mass of Ages
No record of his own

On the Traditional Latin Mass, Bishop Nguyen has no record of his own on file: no decree in his name, no homily, no public word for or against the old rite has been recovered. He is an auxiliary bishop and a vicar general, and the liturgical decisions of the Diocese of Orange belong to its ordinary, Bishop Kevin Vann, who signed them. To credit or blame Nguyen for them would be to invent a record he does not have.

What Vann did is on the record. On July 28, 2021, Vann authorized any priest already celebrating Mass according to the 1962 Roman Missal, in public or privately, to continue to enjoy that faculty. The diocesan board row records that Vann permitted all four sites in 2021, but that after the 2023 rescript the decades-old parish Mass at St. Mary's by the Sea in Huntington Beach was ended. That later change is board-row material only, not verified here from a diocesan source, and no current site count is asserted.

Nguyen's place in all of this is therefore pastoral, not authorial. As Vann's vicar general he helps run the diocese within which those decisions were taken, but the hand that signed them was Vann's. The honest verdict is the plain one: no record of his own, and no inference drawn from his office or from his ministry to Orange's Vietnamese faithful.

References & Further Reading
1.
New Bishop to Be Ordained for the Diocese of Orange — Diocese of Orange · rcbo.org · 2017Primary source for birth, flight, refugee camp, La Salette formation, ordination, and appointment and consecration dates.
2.
Bishop Thanh Thai Nguyen - Dedication of Christ Cathedral — Diocese of Orange (Christ Cathedral dedication site) · dedication.rcbo.org · 2019Vietnamese Center effort at Christ the King, Jacksonville; St. Joseph as largest parish in St. Augustine.
3.
Orange (Traditionis Custodes) — Traditionis Custodes tracker · traditioniscustodes.info · 2021Vann's July 28, 2021 provision: priests already celebrating the 1962 Missal authorized to continue.
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