| Honorific-Prefix: | Venerable |
| Jean-Baptiste Berthier | |
| Honorific-Suffix: | M.S. |
| Birth Date: | 24 February 1840 |
| Birth Place: | Châtonnay, Isère, Kingdom of France |
| Death Place: | Grave, Noord-Brabant, Netherlands |
| Titles: | Priest |
| Venerated In: | Roman Catholic Church |
| Attributes: | Priest's cassock |
| Patronage: | Missionaries of the Holy Family |
John Baptiste Berthier (February 24, 1840 – October 16, 1908) was a Catholic missionary and educator. He founded a Catholic religious institute, the Institute for Late Vocations in Grave, the Netherlands in 1895 - organized to meet the needs of men who desired to become priests later in their life.
Berthier was born February 24, 1840, in Chatonnay in southern France. On October 23, 1858, at the age of 18, he entered the seminary in Grenoble. In July 1862, he joined the Missionaries of La Salette. He was ordained a priest in September 1862.[1] Berthier was first assigned to the Minor Seminary of Saint Joseph in Corps.[2]
The organization received episcopal approval in 1904, and took the name Missionaries of the Holy Family. Berthier died October 16, 1908.[3] Berthier was the author of 36 ascetical and theological works, largely relating to the diversity of ways to holiness through imitating the holy family.[3]
The group expanded into Germany, Switzerland, Belgium, and Brazil by 1910.[4] there were Holy Family priests and brothers serving in 22 countries around the world.[5] its members cultivate a special devotion to Our Lady, Reconciler of Sinners, retaining thus a spiritual kinship with the Missionaries of La Salette, of which Berthier was a member.
The cause for beatification for John Berthier has been opened.[6]