William S. Sessions, American civil servant and judge, 8th Director of the Federal Bureau of Investigation (died 2020)

William Steele Sessions was an American attorney and jurist who served as a United States district judge of the United States District Court for the Western District of Texas and the fourth Director of the Federal Bureau of Investigation. Sessions served as FBI director from 1987 to 1993, when he was dismissed by President Bill Clinton. After leaving the public sector, Sessions represented Semion Mogilevich, international leader of the Russian mafia. He is the father of Texas Congressman Pete Sessions.

The director of the Federal Bureau of Investigation is the head of the Federal Bureau of Investigation (FBI), a United States federal law enforcement agency, and is responsible for its day-to-day operations. The FBI director is appointed for a single 10-year term by the president of the United States and confirmed by the Senate. The FBI is an agency within the Department of Justice (DOJ), and thus the director reports to the attorney general of the United States.