Beberapa film yang pernah dibintangi oleh Katy Louise Saunders, antara lain:
1. A Scandalous Journey (2002)
2. The Lizzie MacQuire Movie (2003) bersama Hillary Duff
3. Three Steps of Heaven (2004)
4. The Borgia (2006)
5. Restless Heart (2010)
6. Third Person (2013)
7. Serial TV Sisi (2009)
8. Serial TV Follow Your Dreams (2011)
9. Serial TV Condor (2018)