The United States Military Training Mission (USMTM) to the Kingdom of Saudi Arabia is a Security Assistance Organization (SAO) which manages and is primarily funded by Foreign Military Sales (FMS) cases between the United States Government and the Kingdom of Saudi Arabia.

USMTM was the result of a meeting between King Abdul Aziz and United States President Franklin D. Roosevelt at Great Bitter Lake.

USMTM coordinates security assistance efforts to train, advise, and assist the Saudi Arabian Armed Forces in building defense capacity/capability through military exercises and professional military education in order to promote regional security and to protect common interests of the United States of America and the Kingdom of Saudi Arabia while strengthening strategic partnership.

The head of USMTM carries the title of "Chief" and is also designated the senior U.S. Defense Representative (USDR) for the Kingdom of Saudi Arabia.

The mission of USMTM directly supports USCENTCOM's theater strategy to shape, respond and prepare, through forward presence, bilateral and multilateral exercise programs, security assistance activities, and foreign military sales.