Who Was Robert Mueller, the FBI Director Who Investigated Trump? Everything to Know After His Death at 81

Robert Mueller, one of the most consequential law enforcement figures in modern American history, died March 20, 2026 at the age of 81. His family confirmed the passing but did not disclose a cause of death.

To many Americans, Mueller's name became synonymous with a single investigation, but Mueller's backstory includes everything from a Purple Heart to counterterrorism efforts after 9/11.

Robert Mueller's Military Service

Mueller was born on August 7, 1944, in New York City.