Natasha Jane Richardson (11 May 1963 – 18 March 2009) was a British actress. A member of the Redgrave family, Richardson was the daughter of actress Vanessa Redgrave and director/producer Tony Richardson and the granddaughter of Michael Redgrave and Rachel Kempson. She was married to Liam Neeson.

Early in her career, Richardson portrayed Mary Shelley in Ken Russell's Gothic (1986) and Patty Hearst in the eponymous 1988 biopic film directed by Paul Schrader and later received critical acclaim and a Theatre World Award for her Broadway debut in the 1993 revival of Anna Christie. Richardson also appeared in The Handmaid's Tale (1990), Nell (1994), The Parent Trap (1998), Maid in Manhattan (2002), and The White Countess (2005).

For playing Sally Bowles in the 1998 Broadway revival of Cabaret, she won the Tony Award for Best Actress in a Musical, the Drama Desk Award for Outstanding Actress in a Musical and the Outer Critics Circle Award.

Richardson died in 2009 at the age of 45 from a head injury after a skiing accident in Quebec.

Natasha Jane Richardson was born in Marylebone, London, on 11 May 1963, a member of the Redgrave family, known as a theatrical and film acting dynasty. She was the daughter of director and producer Tony Richardson and actress Vanessa Redgrave, granddaughter of actors Sir Michael Redgrave and Rachel Kempson, sister of Joely Richardson, half-sister of Carlo Gabriel Nero and Katharine Grimond Hess, niece of actress Lynn Redgrave and actor Corin Redgrave, and cousin of Jemma Redgrave.

Richardson's parents divorced in 1967. The following year, she made her film debut at the age of four in an uncredited role in The Charge of the Light Brigade, directed by her father.

Richardson was educated in London at two private schools, the Lycée Français Charles de Gaulle in South Kensington and St. Paul's Girls' School in Hammersmith, before going on to study acting at the Central School of Speech and Drama.

Richardson began her career in regional theatre at Leeds Playhouse, and in 1984 at the Open Air Theatre in London's Regent's Park, when Richardson appeared in A Midsummer Night's Dream with Ralph Fiennes and Richard E. Grant. Her first professional work in London's West End was in a revival of Anton Chekhov's The Seagull in 1985. This production also featured her mother, Vanessa Redgrave. Soon afterward, Richardson starred in a London stage production of High Society, adapted from the Cole Porter film. She made her Broadway debut in 1993, in the title role of Anna Christie, which is where Richardson met future husband Liam Neeson and was nominated for a Tony Award for Best Actress in a Play at the 47th Tony Awards. In 1998, Richardson played the role of Sally Bowles in Sam Mendes's revival of Cabaret on Broadway, for which she won the Tony Award for Best Actress in a Musical at the 52nd Tony Awards. The following year, Richardson returned to Broadway in Closer, for which she was nominated for the Drama Desk Award for Outstanding Featured Actress in a Play, and in 2005 Richardson appeared again with the Roundabout, this time as Blanche DuBois in the revival of Tennessee Williams's A Streetcar Named Desire, opposite John C. Reilly as Stanley Kowalski. In January 2009, two months before her death, Richardson played the role of Desirée Armfeldt in a concert production of Stephen Sondheim's A Little Night Music, with her mother Vanessa Redgrave, who played Madame Armfeldt. At the time of Richardson's death, the pair were preparing to co-star in a Broadway revival of the musical.