James F. "Jim" Amos is a retired United States Marine Corps four-star general who served as the 35th commandant of the Marine Corps. As a naval aviator, Amos commanded the 3rd Marine Aircraft Wing during the Iraq War in 2003 and 2006. He served as the 31st assistant commandant of the Marine Corps from 2008 to 2010, and was the first Marine Corps aviator to serve as commandant. He retired from the Marine Corps in December 2014.

The commandant of the Marine Corps (CMC) is normally the highest-ranking officer in the United States Marine Corps. It is a four-star general position and a member of the Joint Chiefs of Staff. The CMC reports directly to the secretary of the Navy and is responsible for ensuring the organization, policy, plans, and programs for the Marine Corps as well as advising the president, the secretary of defense, the National Security Council, the Homeland Security Council, and the secretary of the Navy on matters involving the Marine Corps. Under the authority of the secretary of the Navy, the CMC designates Marine personnel and resources to the commanders of unified combatant commands. The commandant performs all other functions prescribed in Section 8043 in Title 10 of the United States Code or delegates those duties and responsibilities to other officers in his administration in his name. As with the other joint chiefs, the commandant is an administrative position and has no operational command authority over United States Marine Corps forces.