Sigourney Weaver (born October 8, 1949, in New York City, U.S.) is an American actress. She studied English at Stanford University and trained at the Yale School of Drama, beginning her career in theater before moving into film, gaining early attention with her breakout role in Alien (1979).
She gained global recognition as Ellen Ripley in the Alien series and earned Academy Award nominations for Aliens, Gorillas in the Mist, and Working Girl. Known for strong, authoritative performances, she became a defining figure in science fiction while maintaining acclaim across diverse genres.
She has continued starring in major projects like Avatar and Avatar: The Way of Water, while also working in television and stage. With a lasting legacy and influential roles, she remains a pioneering presence shaping modern cinema and strong female representation.