Alois Grimm (* 24 October 1886 in Külsheim, Germany, † hanged 11 September 1944 in Brandenburg-Görden) was a Jesuit priest, Patristic scholar, educator, and victim of Nazi religious hostility.
After graduation from Gymnasium (German high school), the young Grimm could not decide as to whether he should follow a navy career or become a priest. Together with his father he made a retreat with Jesuits in the Netherlands, since the order had been outlawed in Germany since the Kulturkampf (1870). In the Fall of 1907, he entered the Society of Jesus. His philosophical and theological studies were interrupted by World War I, which he spent as a nurse in military hospitals. 1920 he was ordained priest and was assigned to the German Speaking Catholic Mission in Florence, Italy. From 1922 until 1926 he studied the classical languages, Latin and Greek, and history in Vienna and Heidelberg. From 1926 on he taught at the Jesuit Gymnasium, Kolleg Stella Matutina in Feldkirch Austria and after 1934 at the Kolleg St. Blasien in Germany.
As patristic scholar, Grimm worked on a critical edition of the Ambrosiaster for the Corpus Scriptorum Ecclesiasticorum Latinorum (CSEL) in Vienna, Austria. The Ambrosiaster is a Latin commentary on Saint Paul, dating back to the fourth century. It exists in many manuscripts and was believed to have been written by Ambrose of Milan. Grimm’s research was aimed at making a critical edition of the Ambrosiaster, which would determine the original version as well as provide an accurate account of the development of variant texts.