Which actress played the replicant Rachael in Blade Runner?

Sean Young played the replicant Rachael in Blade Runner.

Rachael is introduced as a sophisticated employee of the Tyrell Corporation who believes she is human. She is actually an advanced Nexus-6 replicant implanted with memories belonging to Tyrell's niece. This revelation becomes one of the film's central challenges to the boundary between artificial and human identity.

Young's performance helped make Rachael one of science fiction cinema's most memorable characters. Her restrained style, tailored wardrobe, and distinctive 1940s-inspired appearance reinforce Blade Runner's film-noir influence. The character's relationship with Rick Deckard also drives much of the film's emotional story.

A common mix-up is confusing the actress with Joanna Cassidy, who played the replicant Zhora, or Daryl Hannah, who played Pris. Rutger Hauer played Roy Batty, another replicant and the film's principal philosophical counterpoint to Rachael.