Jakob Weis (13 May 1879, Ommersheim, Saarpfalz - 18 March 1948, Zweibrücken) was a priest in the Diocese of Speyer, who also worked as a prison chaplain. During the First World War he became the army chaplain to the 12th Bavarian Infantry Division and Catholic pastoral care advisor to the Armee-Oberkommando Mackensen. From 1918 to 1920 he voluntarily joined soldiers in their internment so as to continue his pastoral care.