Robert Swan Mueller III (/ˈmʌlər/; born August 7, 1944) is an American lawyer, government official, and Marine who served as the sixth Director of the Federal Bureau of Investigation (FBI), from 2001 to 2013. From May 2017 to March 2019, he was the Special Counsel of the investigation into Russian interference in the 2016 United States elections and related matters.

A graduate of Princeton University and New York University, Mueller served as a Marine Corps officer during the Vietnam War, receiving a Bronze Star for heroism and a Purple Heart. He subsequently attended the University of Virginia School of Law. Mueller is a registered Republican in Washington, D.C., and was appointed and reappointed to Senate-confirmed positions by presidents George H. W. Bush, Bill Clinton, George W. Bush and Barack Obama.[4][5]

Mueller has served both in government and private practice. He was an assistant United States attorney; a United States attorney; United States assistant attorney general for the Criminal Division; a homicide prosecutor in Washington, D.C.; acting United States deputy attorney general; and director of the FBI. Mueller was also a partner at the D.C. law firm WilmerHale before being appointed as special counsel.

On May 17, 2017, Mueller was appointed by Deputy Attorney General Rod Rosenstein as special counsel overseeing an investigation into allegations of Russian interference in the 2016 U.S. presidential election and related matters.[6] Mueller submitted his report to Attorney General William Barr on March 22, 2019.[7] On April 18, 2019, the Department of Justice released the special counsel’s final report.[8][9]