Lieutenant colonel (United States)
![U.S. Army, U.S. Marine Corps, and U.S. Air Force insignia of the rank of lieutenant colonel. Style and method of wear may vary between the services.](/Images/godic/202501/24/US-O5_insignia.svg3339.png")
In the United States Army, U.S. Marine Corps, U.S. Air Force, a lieutenant colonel is a field grade military officer rank just above the rank of major and just below the rank of colonel. It is equivalent to the naval rank of commander in the other uniformed services.