John Dunlap Stevenson (June 8, 1821 – January 22, 1897) was an American attorney, politician, and soldier in the U.S. Army in two wars.

[1] He served as a company commander in the 1st Missouri Mounted Volunteers, starting June 27, 1846, during Brigadier General Stephen Kearny's invasion of the New Mexico Territory in the Mexican–American War.

[1] On March 13, 1863, President of the United States Abraham Lincoln appointed Stevenson brigadier general of volunteers in the Union Army, to rank from November 29, 1862.

He is most famous for making a charge at the Battle of Champion Hill which broke the Confederate left flank.

On March 26, 1867, President Andrew Johnson nominated Stevenson for appointment as a brevet brigadier general in the Regular Army (United States), to rank from March 2, 1867, and the United States Senate confirmed the appointment on April 5, 1867, for his service at Champion Hill.

[3] Stevenson was commissioned a colonel in the Regular Army (United States) and appointed to command the 30th U.S. Infantry Regiment, July 28, 1866.