Denis Jachiet (born 21 April 1962) is a French Catholic prelate who is currently Bishop of Belfort-Montbéliard.
After obtaining his license, he was appointed vicar of Notre-Dame-de-Grâce-de-Passy and chaplain of the college and high school students of Saint-Jean de Passy.
[4] In 2014, Cardinal André Vingt-Trois appointed him titular canon of the cathedral of Paris and vicar general in charge of the east and south-east of the diocese.
[5] On 25 June 2016 Pope Francis appointed Auxiliary Bishop of Paris at the same time as Thibault Verny.
It assigns to him the titular seat of Tigisis in Numidia (near present-day Aïn el-Bordj, Algeria).