Actor
| 1. | How to Lose Friends and Alienate People (2008) | |
| 2. | The X-Files: I Want to Believe (2008) | |
| 3. | Straightheads (2007) | |
| 4. | The Last King of Scotland (2006) | |
| 5. | Tristram Shandy: A Cock and Bull Story (2006) | |
| 6. | The Mighty Celt (2005) as Kate | |
| 7. | The House of Mirth (2000) as Lily Bart | |
| 8. | Princess Mononoke (1999) | |
| 9. | Playing By Heart (1998) as Meredith | |
| 10. | The X-Files (1998) | |
| 11. | Chicago Cab (1998) as Brenda | |
| 12. | The Mighty (1998) as Loretta Lee | |
| 13. | The Turning (1992) as April Cavanaugh | |
| 14. | Spies Above () as Narator | |
| 15. | Helen (working title) () | |
| 16. | Future Fantastic () as Narator | |
| 17. | A Matter of Choice () as unavailable |
Director
| 1. | The Speed of Light (2006) Director |
Most Popular Films with Gillian Anderson
| 1. | The X-Files: I Want to Believe | 2008 |
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| 2. | The House of Mirth | 2000 |
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| 3. | Chicago Cab | 1998 |
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| 4. | Playing By Heart | 1998 |
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| 5. | Princess Mononoke | 1999 |
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| 6. | Tristram Shandy: A Cock and Bull Story | 2006 |
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| 7. | Spies Above |
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| 8. | How to Lose Friends and Alienate People | 2008 |
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| 9. | The Mighty | 1998 |
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| 10. | The Turning | 1992 |
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