Thomas Maley Harris (1817–1906) was an American physician and officer. He served as a Union general during the American Civil War. Born and raised in Harrisville, Virginia (now part of West Virginia), Harris originally set out to be a teacher, but changed career paths to study medicine. He received his medical degree from Louisville Medical College in 1843 and returned to Virginia to practice medicine until 1861, when he closed his practice when the Civil War began.