Timothy R. Thibault is a former Federal Bureau of Investigation official who spent more than 30 years at the bureau. He served as Assistant Special Agent in Charge at the Washington Field Office, where he supervised public corruption investigations. In 2022, he became the subject of congressional scrutiny after Senator Chuck Grassley alleged political bias in his conduct. His attorneys denied all allegations, citing his record of investigating corruption in both political parties. Thibault retired from the FBI on August 26, 2022.