Harvey Wallis Salmon (January 26, 1839 – April 27, 1927) was a U.S. politician from Missouri.

During the first year of the American Civil War, he served in the Missouri State Guard.

He returned to Morgan County, serving as a Confederate Army recruiter when he was captured by Union forces and held for ten months.

Upon his release from captivity, he re-joined the Confederate Army, serving on the general staff.

Following the war, he moved to Clinton, Missouri, where he engaged in the banking and real estate industries.