Sigrid Madeline Thornton, AO (born 12 February 1959 in Canberra, Australian Capital Territory), is an Australian film and television actress. She is best known internationally for her role as Jessica Harrison in The Man from Snowy River.
Film roles:
- The Getting of Wisdom (1977) as Maria
- Snapshot (1979) as Angela
- The Man from Snowy River (1982) as Jessica Harrison
- The Man from Snowy Rover II (1988)
- The Lighthorsemen (1987) as Anne
- Inspector Gadget 2 (2003) as Mayor Wilson
- Scare Campaign (2016) as Vicki
Television roles:
- Cop Shop (1978) as Helen Davis / Karen
- Prisoner: Cell Block H (1979 - 1980) as Roslyn Coulson
- SeaChange (1998 - 2000, 2019) as Laura Gibson
- The New Adventures of Ocean Girl (2000) as Narrator
- Welcher & Welcher (2003) As Herself
- Underbelly (2010) as Gerry Lloyd
- Wentworth (2016 - 2018) as Sonia Stevens
