
Christopher Allen Lloyd (born October 22, 1938) is an American actor. He has appeared in many theater productions, films, and on television since the 1960s. He is known for portraying Dr. Emmett "Doc" Brown in the Back to the Future trilogy (1985–1990) and Jim Ignatowski in the comedy series Taxi (1978–1983), for which he won two Emmy Awards.
Lloyd came to public attention in Northeastern theater productions during the 1960s and early 1970s, earning Drama Desk and Obie awards for his work. He made his cinematic debut in One Flew Over the Cuckoo's Nest (1975) and went on to star as Commander Kruge in Star Trek III: The Search for Spock (1984), Professor Plum in Clue (1985), Judge Doom in Who Framed Roger Rabbit (1988), Uncle Fester in The Addams Family (1991) and its sequel Addams Family Values (1993), Switchblade Sam in Dennis the Menace (1993), Mr. Goodman in Piranha 3D (2010), Bill Crowley in I Am Not a Serial Killer (2016) and David Mansell in Nobody (2021).
He earned a third Emmy for his 1992 guest appearance as Alistair Dimple in Road to Avonlea (1992), and won an Independent Spirit Award for his performance in Twenty Bucks (1993). He has done extensive voice work, including Merlock in DuckTales the Movie: Treasure of the Lost Lamp (1990), Grigori Rasputin in Anastasia (1997), the Hacker in the PBS Kids series Cyberchase (2002–present), which earned him Daytime Emmy nominations, and the Woodsman in the Cartoon Network miniseries Over the Garden Wall (2014).

Back to the Future
1985 · as Emmett Brown

Nobody
2021 · as David Mansell

Nobody 2
2025 · as David Mansell

One Flew Over the Cuckoo's Nest
1975 · as Max Taber

Back to the Future Part III
1990 · as Doctor Emmett Brown

Back to the Future Part II
1989 · as Doctor Emmett Brown

The Addams Family
1991 · as Uncle Fester

Addams Family Values
1993 · as Uncle Fester

Piranha 3D
2010 · as Mr. Goodman

Who Framed Roger Rabbit
1988 · as Judge Doom

Dennis the Menace
1993 · as Switchblade Sam

Sin City: A Dame to Kill For
2014 · as Kroenig

Anastasia
1997 · as Rasputin (voice)

The Adventures of Buckaroo Banzai Across the 8th Dimension
1984 · as John Bigboote

Piranha 3DD
2012 · as Mr. Goodman

Self Reliance
2024 · as Dennis Walcott

A Million Ways to Die in the West
2014 · as Doc Brown

The Pagemaster
1994 · as Mr. Dewey