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Sienna Guillory

Acting Born Mar 16, 1975 Kettering, England, UK 24 credits

Biography

Sienna Tiggy Guillory is an English actress and former model. She portrayed Jill Valentine in the Resident Evil action-horror film franchise. Her other prominent roles include elf princess Arya Dröttningu in the fantasy-adventure film Eragon, and the title role in the TV miniseries Helen of Troy.

She is the daughter of American folk guitarist Isaac Guillory and Tina Thompson, an English model.

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Known for

Criminal Minds

as Kate Joyner

CSI: Crime Scene Investigation

as Kacey Monahan

Silo

as Hanna Nichols
Film

Meg 2: The Trench

as Driscoll

Raised by Wolves

as Mary

Danny Phantom

as Resa
Film

Clifford the Big Red Dog

as Maggie

Full filmography

  • Criminal Minds (2005) as Kate Joyner
  • CSI: Crime Scene Investigation (2000) as Kacey Monahan
  • Silo (2023) as Hanna Nichols
  • Agatha Christie's Marple (2004) as Julia Simmons
  • Luther (2010) as Mary Day
  • Meg 2: The Trench (2023) as Driscoll
  • Raised by Wolves (2020) as Mary
  • Eragon (2006) as Arya
  • Fortitude (2015) as Natalie Yelburton
  • Love Actually (2003) as Jamie's Girlfriend
  • The Time Machine (2002) as Emma
  • Stan Lee's Lucky Man (2016) as Eve
  • Resident Evil: Apocalypse (2004) as Jill Valentine
  • In Suspicious Circumstances (1991) as Bessie Smith
  • Helen of Troy (2003) as Helen of Troy
  • Inkheart (2008) as Resa
  • Clifford the Big Red Dog (2021) as Maggie
  • The Virgin Queen (2006) as Lettice Knollys
  • The Buccaneers (1995) as Lady Felicia Marabel
  • High-Rise (2015) as Jane Sheridan
  • The Warriors Gate (2016) as Annie
  • Virtuality (2009) as Rika Goddard
  • Metropolis (2015)
  • Desperate Journey (2025) as Mrs. Knoller