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.

Filmography

• 2026Heavyweight — Dr Collins
• 2026One of Us
• 2025Desperate Journey — Mrs. Knoller
• 2024Strangers — Laura
• 2023Meg 2: The Trench — Driscoll
• Silo — Hanna Nichols
• 2022A Banquet — Holly
• 2022Everything I Ever Wanted to Tell My Daughter About Men — Director
• 2021Clifford the Big Red Dog — Maggie
• 2021Defining Moments — Lisa
• 2021Son of the South
• Raised by Wolves — Mary
• 2019Nuclear — Mother
• 2019Remember Me — Selma
• Stan Lee's Lucky Man: The Bracelet Chronicles — Eve
• 2017The Performance — Sarah
• 2016Abduct — Angelica Dark
• 2016Don't Hang Up — Mrs. Kolbein
• Stan Lee's Lucky Man — Eve
• 2016The Warriors Gate — Annie
• Fortitude — Natalie Yelburton
• 2015High-Rise — Jane Sheridan
• Metropolis
• 2015The Wicked Within — Bethany
• 2014Being American — Susan
• 2014The Goob — Janet
• 2013The List — Alison Corwin
• 2012Resident Evil: Retribution — Jill Valentine
• 2011The Big Bang — Julie Kestral / Lexie Persimmon
• 2011The Last Belle — Rosie
• 2010Gunless — Jane Taylor
• 2010I'm Here — Anne
• Luther — Mary Day
• 2010Perfect Life — Anne
• 2010Resident Evil: Afterlife — Jill Valentine
• 2009Virtuality — Rika Goddard
• Virtuality — Rika Goddard
• 2008Inkheart — Resa
• 2007The Heart of the Earth — Kathleen Crown
• 2006Eragon — Arya
• 2006Rabbit Fever — Newscaster
• The Virgin Queen — Lettice Knollys
• Criminal Minds — Kate Joyner
• 2005Silence Becomes You — Grace
• Agatha Christie's Marple — Julia Simmons
• 2004Beauty — Cathy Wardle
• 2004Resident Evil: Apocalypse — Jill Valentine
• 2004Symphony of Evil
• Helen of Troy — Helen of Troy
• 2003Love Actually — Jamie's Girlfriend
• 2003Rufus
• 2003The Principles of Lust — Juliette
• 2002The Last Minute — Kayak Girl
• 2002The Time Machine — Emma
• 2001Kiss Kiss (Bang Bang) — Kat
• 2001Late Night Shopping — Susie
• 2001Superstition — Julie McCullough
• 2001Two Days, Nine Lives — Kate
• CSI: Crime Scene Investigation — Kacey Monahan
• 2000Dear M.
• 2000Sorted — Sunny
• Take a Girl Like You — Jenny Bunn
• 1996The Future Lasts A Long Time — Blue
• The Buccaneers — Lady Felicia Marabel
• 1993Riders — Fenella Maxwell
• In Suspicious Circumstances — Bessie Smith
• Bedlam — Sarah

Appearances as themselves (5)

• 2026Broken English — Self
• 2012Back from the Afterlife: Making 'Resident Evil: Retribution' — Self
• 2010Program Alice: Activated — Self
• 2007Resident Evil: Diary of an Apocalypse — Self
• 2004Game Babes — Self