Michel Poinsinet de Sivry (born 10 April 1984) is a French bishop of the Society of St Pius X, a Traditionalist Catholic organization declared to be in schism with the Catholic Church by Pope Leo XIV in July 2026.
He was consecrated a bishop by the Society of St Pius X in the 2026 Écône consecrations, and was declared excommunicated from the Catholic Church as the consecration did not have the permission of Pope Leo XIV.
Early life Poinsinet de Sivry was born in 1984 in France. He comes from a Catholic family with seven children.
He studied at traditionalist seminaries in Flavigny-sur-Ozerain and Écône. In 2008, he was ordained as a priest for the SSPX.
Career After his ordination, Poinsinet de Sivry worked as a teacher and headmaster in France. He taught at Saint-Joseph-des-Carmes school in Montréal from 2008 to 2011. He was the headmaster of Saint-Louis School in Paris from 2011 to 2016. He then worked at Saint-Jean-Baptiste-de-La-Salle school in Camblain-l’Abbé until 2022.
In 2022, he became the superior (leader) of the Benelux district for the SSPX.
Bishop On 26 May 2026, the SSPX announced that Poinsinet de Sivry was chosen to become a bishop. Pope Leo XIV did not agree to this choice. The Pope asked the SSPX not to consecrate him.
On 1 July 2026, Poinsinet de Sivry was consecrated as a bishop during a service in Écône, Switzerland by Alfonso de Galarreta, with Bernard Fellay acting as the sole co-consecrator.
Because he was consecrated without a papal mandate, Poinsinet de Sivry was automatically excommunicated. The SSPX does not agree with this excommunication.
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