Major General Allen Wyant Gullion, USA (December 14, 1880 – June 19, 1946) was an American Army officer who served as the 19th Judge Advocate General of the United States Army from 1937 to 1941 and the 17th Provost Marshal General of the United States Army from 1941 to 1944.

For his wartime service, Lieutenant Colonel Gullion was decorated with the Army Distinguished Service Medal for his merits in the Office of Mobilization Division. During World War II, Gullion was appointed the U.S. Army Provost Marshal in 1941 and served in this capacity until 1944. Gullion also received the Oak Leaf Cluster to his Distinguished Service Medal and Legion of Merit.