Robert Swan Mueller III (born August 7, 1944) is an American lawyer and civil servant who was the sixth Director of the Federal Bureau of Investigation from 2001 to 2013. A Republican, he was appointed by President George W. Bush and his original ten-year term was given a two-year extension by President Barack Obama, making him the longest-serving FBI director since J. Edgar Hoover. He is currently head of the Special Counsel investigation of Russian interference in the 2016 United States elections.

Mueller was accepted for officer training in the United States Marine Corps in 1968, attending training at Parris Island, Officer Candidate School, Army Ranger School, and Army jump school.

In July 1968, he was sent to South Vietnam where he served as a rifle platoon commander with Second Platoon, H Company, 2nd Battalion, 4th Marines, 3rd Marine Division; he eventually became aide-de-camp to 3rd Marine Division's commanding general. In April 1969, he received an enemy gunshot wound in the thigh, recovered, and returned to lead his platoon until June 1969. For his service in and during the Vietnam War, his military decorations and awards include: the Bronze Star Medal with Combat "V", Purple Heart Medal, two Navy and Marine Corps Commendation Medals with Combat "V", Combat Action Ribbon, National Defense Service Medal, Vietnam Service Medal with three  3⁄16" bronze stars, Republic of Vietnam Gallantry Cross, Republic of Vietnam Campaign Medal, and Parachutist Badge.

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