Michael Aloysius Donaldson (January 16, 1884 – April 12, 1970) was a United States Army sergeant and a recipient of the United States military's highest decoration, the Medal of Honor, for his actions in France during World War I. He was a member of the Irish-American 165th Infantry Regiment (better known as "The Fighting 69th"). In addition to the Medal of Honor, Donaldson also received decorations from France and Montenegro and participated in the Champagne-Marne, Aisne-Marne, St. Mihiel, Meuse-Argonne and Defensive Sector campaigns.