Sian Thomas Filmography
- Actor (31 credits)
- The Conductor (2018) Mother Frank
- War Machine (2017) Edith May
- Finding Your Feet (2017) Lilly
- Under Milk Wood (2014) Mrs. Dai Bread Two
- Atlantis (2013) Eurydice
- The Royal Bodyguard (2011) Muriel Whittington
- Grandpa in My Pocket (2009) Lenora
- Merlin (2008) Atorloppe
- Harry Potter and the Order of the Phoenix (2007)
- Half Broken Things (2007) Shelley
- The Ruby in the Smoke (2006) Mrs Rees
- Perfume: The Story of a Murderer (2006) Madame Gaillard
- Vincent (2005) Helen Miller
- The Worst Week of My Life (2004) Nicola
- Vanity Fair (2004) Lady Darlington
- Sredni Vashtar (2003) The Aunt
- Coming Up (2003) Abbess
- The Last Detective (2003) Annie
- Crossings (2002) Woman
- Vanity Fair (1998) Lady Steyne
- Richard II (1997) Queen Isobel
- Blind Men (1997) Julie McAnearney
- Tears Before Bedtime (1995) Susan
- A Mind to Murder (1995) Dr. Saxon
- Rose Red (1994)
- Doctor Finlay (1993) Stella Powell
- Erik the Viking (1989) Thorhild the Sarcastic
- Prick Up Your Ears (1987) Marilyn Orton
- Screen One (1985) Aileen Armitage
- Maybury (1981) Lesley
- Masterpiece Theatre (1971) Mrs. Rees
