Fritz William Weaver (born January 19, 1926) is a Tony Award-winning American actor and voice actor.

Weaver was born in Pittsburgh, Pennsylvania, the son of Elsa W. (née Stringaro) and John Carson Weaver. His mother was of Italian descent. Weaver attended Peabody High School. He served in Civilian Public Service as a conscientious objector during World War II, breaking into acting in the early 1950s. His first television role came in 1956 on an episode of The United States Steel Hour. He would continue to appear on television during the next four decades, appearing on such shows as The Twilight Zone (in episodes "Third from the Sun" and "The Obsolete Man"), Dr. Kildare, The Man from U.N.C.L.E., Rawhide, Mission: Impossible, Combat!, Gunsmoke, Mannix, Kung Fu, Hawaii Five-O, Magnum P.I., Murder, She Wrote, Matlock, Law & Order, Star Trek: Deep Space Nine (in the episode "Tribunal"), The X-Files, and Frasier.

Weaver won the Tony Award for Best Actor in a Play and the Drama Desk Award for Outstanding Performance for Child's Play (1970). Additional Broadway theatre credits include The Chalk Garden (Tony nomination and Theatre World Award win), All American, Baker Street, Absurd Person Singular, Love Letters, and The Crucible.

He has appeared in many films, generally as a supporting actor. Of these, the most well-known are probably Marathon Man, Black Sunday and Creepshow, and the 1999 remake of The Thomas Crown Affair. Other notable movies include Power (1986), Demon Seed(1977), The Day of the Dolphin(1973), and Fail-Safe (1964).

Since 1995, Weaver has worked primarily as a voice actor, providing narration for programs on the History Channel.

Fritz Weaver, the American actor, was born on January 19, 1926, in Pittsburgh, Pennsylvania. He served in Civilian Public Service as a conscientious objector during World War II, breaking into acting in the early 1950s. He made his Broadway debut in October 1955 in "The Chalk Garden," which garnered five Tony Award nominations, including one for Weaver as Best Featured Actor in a Play. He also won a 1956 Theatre World Award for his performance. The first of literally scores of television appearances came in 1957, in "The Playwright and the Stars" broadcast as part of the drama omnibus "Studio One" (1948). He continued to appear on Broadway, winning a Tony Award for Best Actor in Play his performance as Jermome Malley in Robert Marasco's "Child's Play." Though Weaver has appeared in many movies, it generally was as a supporting actor or in small parts, and the role of Malley was given to James Mason (I) in the 1972 film version (Child's Play (1972)) of the play. His most memorable role, arguably, was that of the doomed German Jewish patriarch Dr. Josef Weiss in the watershed TV mini-series "Holocaust" (1978) (mini), for which he was nominated for an Emmy Award as Outstanding Lead Actor in a Limited Series. Since 1995, Weaver is known as the narrator of programs on the History Channel.