Kathleen Denise Quinlan is an American film and television actress. She is best known for her Golden Globe-nominated performance in the 1977 film of the novel I Never Promised You a Rose Garden, and her Golden Globe and Academy Award-nominated role in the 1995 film Apollo 13, along with many roles in other feature films, television movies and series, in a career spanning almost five decades.

I Never Promised You a Rose Garden is a 1977 American psychological drama film directed by Anthony Page from a screenplay by Gavin Lambert and Lewis John Carlino, based on the 1964 novel of the same name by Joanne Greenberg. The film stars Bibi Andersson, Kathleen Quinlan, Sylvia Sidney, Martine Bartlett, Lorraine Gary, Signe Hasso, Susan Tyrrell, and Diane Varsi. It follows a mentally ill teen who struggles between fantasy and reality, escaping to her own imaginary world.