Bradford Claude Dourif (born March 18, 1950) is an American actor. He was nominated for an Oscar, and won Golden Globe and BAFTA Awards for his supporting role as Billy Bibbit in the film One Flew Over the Cuckoo's Nest (1975). He is also known for his roles as Chucky in the Child's Play franchise, and Gríma Wormtongue in The Lord of the Rings series. Dourif's other film roles include Wise Blood (1979), Dune (1984), Mississippi Burning (1988), The Exorcist III (1990) and Alien Resurrection (1997). He also appeared in many television series, notably Deadwood (2004–2006, 2019), for which he received a Primetime Emmy Award nomination. Dourif has often played eccentric or disturbed characters, starting with Cuckoo's Nest and continuing with Eyes of Laura Mars (1978), John Huston's Wise Blood (1979)," Forman's Ragtime (1981), Marc Didden's Istanbul (1985) and David Lynch's Dune (1984) and Blue Velvet (1986). Dourif has appeared in a number of horror films, notably as the voice of Chucky in the Chucky franchise. He portrayed the Gemini Killer in The Exorcist III (1990) and appeared in Death Machine (1994) and Alien Resurrection (1997). He later appeared as Sheriff Lee Brackett in Rob Zombie's Halloween (2007) and Halloween II (2009). In 2013, Dourif reprised his role as Chucky in the sixth installment of the Child's Play franchise, Curse of Chucky, and then again in the 2017 sequel, Cult of Chucky, both of which were straight-to-DVD releases. His daughter, Fiona Dourif, also starred with him in both films. Other notable film roles include Gríma Wormtongue in the Lord of the Rings trilogy and supporting roles in Fatal Beauty (1987), Mississippi Burning (1988), Hidden Agenda (1990), London Kills Me (1991) and Sinner (2007). Dourif was initially cast as the Scarecrow in Batman Forever (1995) while Tim Burton was attached to the project (Burton had also wanted to cast Dourif as The Joker in Batman, but the studio refused). However, the script was later heavily rewritten and the character was eventually removed. Joel Schumacher eventually took over the project and cast Tommy Lee Jones as Two-Face and Jim Carrey as the Riddler. Dourif has worked with director Werner Herzog on many occasions, appearing in Scream of Stone (1991), The Wild Blue Yonder (2005), Bad Lieutenant: Port of Call New Orleans (2009), and My Son, My Son, What Have Ye Done? (2009).

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