Alphonse Magnien (June 9, 1837 – December 21, 1902) was the superior at St. Mary's Seminary and University in Baltimore, Maryland from 1878 to 1902.
He seemed instinctively to grasp the vital part of a question and rested content only when he had found the truth.
Under his administration St. Austin's College was founded at The Catholic University of America, for the recruiting of American vocations to St. Sulpice.
Some months later he went to Paris for special treatment, where he underwent a very dangerous operation, and returned to his post at Baltimore.
His health, however, was never entirely regained and after two or three years began to fail markedly, and in the summer of 1902 he resigned, dying a few months later.