Editing Gillian Anderson (section)

===Film===
{| class="wikitable sortable"
|-
! Year
! Title
! Role
! class="unsortable" | Notes
|-
| 1986
| ''Three at Once''
| Woman 1
| rowspan="2" | Short film
|-
| 1988
| ''{{sortname|A|Matter of Choice|nolink=1}}''
| Young pregnant woman
|-
| 1992
| ''{{sortname|The|Turning|The Turning (1992 film)}}''
| April Cavanaugh
|
|-
| 1997
| ''[[Chicago Cab]]''
| Southside Girl or Brenda
| 
|-
| rowspan="3"| 1998
| ''[[The X-Files (film)|The X-Files]]''
| [[Dana Scully]]
|
|-
| ''{{sortname|The|Mighty}}''
| Loretta Lee
|
|-
| ''[[Playing by Heart]]''
| Meredith
|
|-
| 1999
| ''[[Princess Mononoke]]''
| Moro (voice)
| English dub
|-
| 2000
| ''{{sortname|The|House of Mirth|The House of Mirth (2000 film)}}''
| Lily Bart
| 
|-
| rowspan="2"| 2005
| ''{{sortname|The|Mighty Celt}}''
| Kate Morrison
| 
|-
| ''{{sortname|A|Cock and Bull Story}}''
| Herself/Widow Wadman
|
|-
| 2006
| ''{{sortname|The|Last King of Scotland|The Last King of Scotland (film)}}''
| Sarah Merrit
|
|-
| 2007
| ''[[Straightheads]]''
| Alice Comfort
| 
|-
| rowspan="2"| 2008
| ''{{sortname|The|X-Files: I Want to Believe}}''
| [[Dana Scully]]
|
|-
| ''[[How to Lose Friends & Alienate People (film)|How to Lose Friends & Alienate People]]''
| Eleanor Johnson
|
|-
| 2009
| ''[[Boogie Woogie (film)|Boogie Woogie]]''
| Jean Maclestone
|
|-
| 2010
| ''[[No Pressure (2010 film)|No Pressure]]''
| Herself
| Short film
|-
| 2011
| ''[[Johnny English Reborn]]''
| Pamela "Pegasus" Thornton
|
|-
| rowspan="3"| 2012
| ''[[Sister (2012 film)|Sister]]''
| Kristin Jansen
| 
|-
| ''[[Shadow Dancer (2012 film)|Shadow Dancer]]''
| Kate Fletcher
|
|-
| ''[[Room on the Broom (film)|Room on the Broom]]''
| Witch (voice)
| Short film
|-
| rowspan="3"| 2013
| ''[[Mr. Morgan's Last Love]]''
| Karen Morgan
| 
|-
| ''[[From Up on Poppy Hill]]''
| Dr. Miki Hokuto (voice)
| English dub
|-
| ''[[I'll Follow You Down]]''
| Marika Whyte
| 
|-
| rowspan="3" | 2014
| ''[[Sold (2014 film)|Sold]]''
| Sophia
|
|-
| ''[[Robot Overlords]]''
| Kate Flynn
| 
|-
| ''The Departure''
| [[Blanche DuBois]]
| Short film; also director
|-
| rowspan="3"| 2017
| ''[[Viceroy's House (film)|Viceroy's House]]''
| [[Edwina Mountbatten]]
|
|-
| ''The Artist's Garden: American Impressionism''
| Narrator (voice)
| Documentary
|-
| ''[[Crooked House (film)|Crooked House]]''
| Magda West
|
|-
| rowspan="3"| 2018
| ''[[The Spy Who Dumped Me]]''
| Wendy
| 
|-
| ''[[UFO (2018 film)|UFO]]''
| Professor Rebecca Hendricks
|
|-
| ''[[This Changes Everything (2018 film)|This Changes Everything]]''
| Herself
| Documentary
|-
| 2019
| ''[[The Sunlit Night]]''
| Olyana Gregoriov
|
|-
| 2021
| ''[[Robin Robin]]''
| The Cat (voice)
| Short film
|-
| 2022
| ''[[The Pale Blue Eye]]''
| Mrs. Julia Marquis
|
|-
| rowspan="3"| 2024
| ''[[White Bird (film)|White Bird]]''
| Vivienne Beaumier
|
|-
| ''[[Scoop (2024 film)|Scoop]]''
| [[Emily Maitlis]]
|
|-
| ''[[The Salt Path (film)|The Salt Path]]'' 
| [[Raynor Winn]]
| <ref>{{cite web|url=https://www.southwalesargus.co.uk/news/23604960.gillian-anderson-jason-isaacs-filming-salt-path-chepstow/|website=South Wales Argus|accessdate=30 June 2023|title= Gillian Anderson, Jason Isaacs filming Salt Path in Chepstow|date=21 June 2023|first=Dan|last=Barnes}}</ref>
|-
| 2025
| {{pending film|[[Tron: Ares]]}}
| rowspan="2"  {{TBA}}
| rowspan="2" | ''Post-production''
|-
| {{TBA}}
| {{pending film|[[Animals (upcoming film)|Animals]]}}
|}
<!-- Per WP:NFF and WP:CRYSTAL, do not add films that are listed as "pre-production" -->