William Frederick Knight, also known as William Knight or simply William Frederick, was an American voice actor born on December 6, 1933. He was active in the industry from 1966 until his death on November 8, 2022, in Los Angeles. Knight specialized in providing English dubbed voices for anime and video games, frequently portraying authoritative elder figures, mentors, and wise old men.

Throughout his extensive career, Knight took on numerous significant roles in major anime series. He was the voice of Section 9 Department Chief Daisuke Aramaki in the Ghost in the Shell franchise, including the films and Stand Alone Complex television series. He played the character Gordon Rosewater in the series The Big O, a role for which he was credited under his real name due to union rules. In the Nura: Rise of the Yokai Clan series and its sequel, Demon Capital, he provided the voice of Nurarihyon, the supreme commander of all spirits and grandfather of the protagonist.

His other notable anime roles included Dr. Tokioka in Gungrave. He also appeared as an old man in Cowboy Bebop, Kuzemi in Eureka Seven, Father Rinaldo in Hellsing, Danzo Shimura in Naruto Shippuden, and Doctor Nor in The Third: The Girl with the Blue Eye. While the provided examples list the role of Chairman in Weather Woman, this specific credit was not found in the search results.

Knight was known for his longevity in the voice acting field and became a familiar presence in English anime dubs produced primarily in Los Angeles during the late 1990s and 2000s. He was sometimes credited under variations of his name, including William Knight and Frederick Knight. His passing in 2022 marked the end of a career that spanned over five decades.