Tricia O'Neil Filmography
- Actor (44 credits)
- Genghis Khan: The Story of a Lifetime (2010) Hoelun
- Titans (2000) Dr. Smith
- Babylon 5: In the Beginning (1998) Earth Alliance President
- Gia (1998) Vogue Editor
- Titanic (1997) Woman
- Degree of Guilt (1995) Rosa
- High Tide (1994) Karen Donaldson
- Robin's Hoods (1994) Lydia Barnhouse
- Gengis Khan (1992) Hoelun
- A Woman Scorned: The Betty Broderick Story (1992) Margaret Fitzpatrick
- Ted & Venus (1991) Judge Katherine Notch
- Civil Wars (1991) Ruth Conway
- Equal Justice (1990) Sara
- Baby M (1988)
- Police Story: Gladiator School (1988) D.A. Willis
- Star Trek: The Next Generation (1987) Capt. Rachel Garrett
- Jack and Mike (1986) Barbara
- Megazone 23 (1985) дополнительные голоса (Streamline Pictures dub), voice acting
- Murder, She Wrote (1984)
- The Murder of Sherlock Holmes (1984) Ashley Vickers
- Airwolf (1984) Annie Oakley
- Whiz Kids (1983) Kathy Fairgate
- The A-Team (1983) Dr. Maggie Sullivan
- Hardcastle and McCormick (1983) Pamela Peterson
- Lottery! (1983)
- The Powers of Matthew Star (1982) Fortune Teller
- Voyagers! (1982) Annie Brown
- Piranha Part Two: The Spawning (1981) Anne Kimbrough
- Jacqueline Susann's Valley of the Dolls (1981) Enid Marshall
- The Fall Guy (1981) Agt. Eve Peterson
- Brave New World (1980) Maoina Krupps
- The Misadventures of Sheriff Lobo (1979) Sheila McKnight
- The Kid from Left Field (1979) Marion Fowler
- Are You in the House Alone? (1978) Jessica Hirsch
- Columbo: How to Dial a Murder (1978) Mrs. Cochran - the dog trainer
- Mary Jane Harper Cried Last Night (1977) Dr. Angela Buccieri
- Charlie Cobb: Nice Night for a Hanging (1977) Angelica
- Big Hawaii (1977) Dr. Ericka Bergen
- Sirota's Court (1976) Sugar Hills
- The Gumball Rally (1976) Angie - Rolls Royce
- Serpico (1976) Grace
- Ellery Queen (1975) Yvonne Danello
- Barney Miller (1974) Alex Kramer
- The Legend of Nigger Charley (1972) Sarah Lyons
