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Tricia O'Neil (born Patricia Lou O'Neil; March 11, 1945) is an American actress from Shreveport, Louisiana. She is known for her diverse roles in film and television spanning decades. O'Neil made her film debut in 1972 in "The Legend of Nigger Charley" and appeared in films such as "The Gumball Rally" (1976), "Piranha II: The Spawning" (1982), and "Titanic" (1997). She has made numerous guest appearances on TV shows like "Columbo," "Murder, She Wrote," "Star Trek: The Next Generation," where she notably played Captain Rachel Garrett—the first female captain of the U.S.S. Enterprise— "Star Trek: Deep Space Nine," "Babylon 5," and many others. O'Neil began her performing career as a jazz, blues, and folk singer before transitioning to acting. She studied at Baylor University and made her professional theatrical debut on Broadway in the musical "Two by Two." Her acting career is distinguished by versatility, including roles in science fiction and drama. She retired from screen acting in 2001.

Titans

Gia
as Vogue Editor

Babylon 5: In the Beginning
as Earth Alliance President

Titanic
as Woman

Degree of Guilt
as Rosa

JAG
as Amanda Litrell

Babylon 5
as M'Ola

Diagnosis: Murder
as Jane Ellington

Star Trek: Deep Space Nine
as Korinas

A Woman Scorned: The Betty Broderick Story
as Margaret Fitzpatrick

Ted & Venus
as Judge Katherine Notch

Beverly Hills, 90210
as Mrs. O'Lare

Doogie Howser, M.D.
as Acting Coach

Police Story: Gladiator School
as D. A. Willis
Police Story
as District Attorney Willis

Star Trek: The Next Generation
as Capt. Rachel Garrett

Jake and the Fatman
Kay O'Brien

L.A. Law
as Meredith Korngold

Matlock
as Cynthia Slayton

Blacke's Magic
as Teresa George

MacGyver
as Victoria James / Susan Murphy

Murder, She Wrote
as Bibi Hartman

Hunter
as Sylvia Brand

Airwolf
as Annie Oakley / Louise Mackey

Scarecrow and Mrs. King

Hardcastle and McCormick

The A-Team
as Dr. Maggie Sullivan

Voyagers!

Piranha II: The Spawning
as Anne Kimbrough

Simon & Simon

Jacqueline Susann's Valley of the Dolls
as Enid Marshall

Brave New World
as Maoina Krupps

The Kid from Left Field
as Marion Fowler

Hart to Hart

Are You in the House Alone?
as Jessica Hirsch

The Eddie Capra Mysteries

Mary Jane Harper Cried Last Night
as Dr. Angela Buccieri

Big Hawaii

Charlie Cobb: Nice Night for a Hanging
as Angelica

Eight Is Enough
Sirota's Court

Charlie's Angels
as Anne Moore

The Gumball Rally
as Angie - Rolls Royce

Ellery Queen

Barney Miller
as Alex Kramer (as Tricia O'Neill)
How to Survive a Marriage
as Joan Willis

The Legend of Nigger Charley
as Sarah Lyons

Columbo
as Miss Cochran

Hawaii Five-O
as Dilys Conover