Redgrave made her Broadway debut in 1967 and performed in several stage productions in New York City while making frequent returns to London's West End.

Lynn Redgrave is the only person to have been nominated for all of the 'Big Four' American entertainment awards (Emmy, Grammy, Oscar and Tony, collectively known when all four have been won as "EGOT") – without winning any of them.

[3] After training at London's Central School of Speech and Drama, Redgrave made her professional debut in a 1962 production of A Midsummer Night's Dream at the Royal Court Theatre.

[4] Following a tour of Billy Liar and repertory work in Dundee, she made her West End debut at the Haymarket, in N. C. Hunter's The Tulip Tree with Celia Johnson and John Clements.

She was invited to join the National Theatre for its inaugural season at the Old Vic, working with such directors as Laurence Olivier, Franco Zeffirelli and Noël Coward in roles like Rose in The Recruiting Officer, Barblin in Andorra, Jackie in Hay Fever, Kattrin in Mother Courage, Miss Prue in Love for Love and Margaret in Much Ado About Nothing, which kept her busy for the next three years.

London appearances included Michael Frayn's The Two of Us with Richard Briers at the Garrick, David Hare's Slag at the Royal Court and Born Yesterday, directed by Tom Stoppard at Greenwich in 1973.

During the 1985–86 season she appeared with Rex Harrison, Claudette Colbert and Jeremy Brett in Aren't We All?, and with Mary Tyler Moore in A. R. Gurney's Sweet Sue.

She played Broadway again in Moon Over Buffalo (1996) with co-star Robert Goulet and starred in the world premiere of Tennessee Williams' The Notebook of Trigorin, based on Anton Chekhov's The Seagull.

Redgrave became well-known in the United States after appearing in the television series House Calls, for which she received an Emmy nomination.

In 1989, she appeared on Broadway in Love Letters with her husband John Clark, and thereafter they performed the play around the country, on one occasion for the jury in the O. J. Simpson case.

[7] In September 2006, she appeared in Nightingale, the U.S. premiere of her new one-woman play based upon her maternal grandmother Beatrice, at Los Angeles' Mark Taper Forum.

[8] Redgrave narrated approximately 20 audiobooks, including Prince Caspian: The Chronicles of Narnia by C. S. Lewis for Harper Audio[9] and Inkheart by Cornelia Funke for Listening Library.

[21] In 2001, Lynn Redgrave received a LIVING LEGEND honor at The WINFemme Film Festival and The Women's Network Image Awards.