Ralph Emerson Truman (May 10, 1880 – April 30, 1962) was an American major general who led the 35th Division of the Arkansas, Kansas, Missouri, and Nebraska National Guards between 1938 and 1941.

On March 26, 1917, he was called into federal service as part of the Machine Gun Company, Fourth Missouri Infantry, after the United States entered World War I.

He served in France with the 140th Infantry Regiment of the 35th Division, being promoted to first lieutenant on January 28, 1918, to captain on July 16, 1918, and to major on March 1, 1919.

As part of the removal of over-age or militarily inefficient officers in the U.S. Army prior to potential American involvement in World War II, Truman was relieved of his command on October 4, 1941.

[8] After the U.S. entered World War II in December 1941, Truman withdrew his resignation, but was placed on the inactive list on January 15, 1942, pending a call back to active duty.

[13] The couple did not have any children, and remained married until Ralph's death on April 30, 1962, at the age of eighty-one, from a heart attack.