Henry Regis Granjon (June 15, 1863 – November 9, 1922) was a French-born prelate of the Roman Catholic Church.

[1] He received his seminary training at Saint-Sulpice in Paris, and in Rome, where he earned a Doctor of Divinity degree.

[3] He received his episcopal consecration at the Baltimore Cathedral on the following June 17 from Cardinal James Gibbons, with Bishops John J. Monaghan and Edward Patrick Allen serving as co-consecrators.

Granjon contributed the articles "Tucson" and "Mission San Xavier del Bac" to the Catholic Encyclopedia.

[6] At age 59, Henry Granjon died on November 9, 1922, in Brignais, France while on a trip in Europe to meet with Pope Pius XI.