Alfred William Bjornstad (October 13, 1874 – November 4, 1934) was an American army officer and brigadier general who served during World War I.

[2] He joined the Minnesota National Guard as a private in 1894, and worked his way up the enlisted ranks in the years before the Spanish–American War.

Bjornstad performed General Staff duty from 1911 and 1912, and from 1912 to 1913 he was the United States military attaché in Berlin.

Bjornstad then became the chief of staff, Third Corps, followed by duty as commanding general, 13th Infantry Brigade in 1918 and 1919.

He also was awarded the Order of Saints Michael and George from Britain, and the Croix de Guerre and Legion of Honor from France.