Ira Allen Haynes (September 10, 1859 – February 24, 1955) was a United States Army officer in the late 19th and early 20th centuries.

[2][3] Several of his classmates would go on to become general officers in their careers, such as Charles W. Kennedy, George H. Cameron, Harry C. Hale, George W. Read, John W. Heard, Omar Bundy, Samson L. Faison, William C. Langfitt, Robert D. Walsh, Omar Bundy, Charles G. Morton, Tyree R. Rivers, John W. Ruckman, Isaac Littell and Clarence R. Edwards.

[4][3] Haynes was promoted to the rank of brigadier general on August 5, 1917, and he commanded the 64th Field Artillery Brigade at Camp Beauregard.

Afterward, Haynes assumed command over the Ninth Coast Artillery District in San Francisco, and his promotion to brigadier general was made permanent.

[5][3] This biographical article related to World War I United States Army is a stub.