Louis Auguste Bertrand (January 8, 1808 – March 21, 1875), born John Francis Elias Flandin, was an early leader of the Church of Jesus Christ of Latter-day Saints (LDS Church) in France.
In 1850, he met John Taylor and shortly thereafter was baptized a member of the LDS Church.
Bertrand was involved in the publication of the church periodical L'Etoile du Deseret.
[1] Despite earnest efforts, the work began to decline after 1855 under the pressure of continual political turmoil.
In 1863, Bertrand wrote Brigham Young that the French were "every one spiritually dead," and although he stayed for another year to "prepare the ground" for a time when better conditions would favor missionary work, he left in 1864 for Utah.