Heather Elizabeth Langenkamp (born July 17, 1964) is an American actress and businesswoman. Langenkamp is best known for portraying the resourceful heroine Nancy Thompson in the A Nightmare on Elm Street films, a role that has led to her being an influential figure in horror films.

Born and raised in Tulsa, Oklahoma, Langenkamp began acting professionally after being cast as an extra in Francis Ford Coppola‘s Tulsa-shot drama films The Outsiders (1983) and Rumble Fish (1983), the latter of which she had a line of dialogue which got her into the Screen Actors Guild. While her scenes were cut from both films, the experience motivated her to pursue an acting career.

Langenkamp appeared as the lead in the independent drama film Nickel Mountain (1984) before her breakthrough role as Nancy in Wes Craven's landmark slasher film A Nightmare on Elm Street (1984). Langenkamp reprised her role as Nancy in A Nightmare on Elm Street 3: Dream Warriors (1987) and portrayed a fictionalized version of herself in the influential metatextual horror film Wes Craven's New Nightmare (1994). In 2010, Langenkamp worked as the executive producer and narrator for the documentary film Never Sleep Again: The Elm Street Legacy, followed by another documentary, I Am Nancy (2011).

Langenkamp had guest appearances as two different characters on the ABC sitcom Growing Pains (1988-1990), for a total of five episodes. Langenkamp reprised one of her characters, Marie Lubbock, as a main cast member in the spin-off series Just the Ten of Us (1988-1990) for three seasons. Following an acting hiatus, Langenkamp returned to acting with the horror film The Butterfly Room (2012). She has since had roles in Star Trek Into Darkness (2013), the Netflix series The Midnight Club (2022), The Life of Chuck (2024), and Last Chance Motel (2026). Langenkamp co-runs the visual effects studio AFX Studio with her husband David LeRoy Anderson, where she has worked as a special make-up effects coordinator for films such as Dawn of the Dead (2004), Cinderella Man (2005), Evan Almighty (2007), and The Cabin in the Woods (2012).

Heather Elizabeth Langenkamp was born in Tulsa, Oklahoma. Her mother, Mary Alice (née Myers), is an artist and an abstract expressionist painter. Her father, Robert Dobie Langenkamp, was a petroleum attorney and a Deputy Assistant Secretary of Energy. She later moved to Washington, D.C., where she attended the National Cathedral School for Girls, graduating in 1982. She then enrolled in Stanford University in 1982 and was a roommate of politician Susan Rice.

At age eighteen, Langenkamp worked for the Tulsa Tribune where she saw an advertisement looking for extras for Francis Ford Coppola's The Outsiders in the summer of 1982. Auditions occurred at a nearby elementary school where the casting director took a Polaroid of her; Langenkamp got a call back to appear in a high school scene, in which she had to wear attire based on 1950s fashion. Coppola was shooting another film in Tulsa the same summer, Rumble Fish, after The Outsiders; Langenkamp's friend got a phone call to appear in a street scene, and her friend's mother felt more comfortable with Langenkamp going with her to the set at night. The casting director allowed her to join and gave dialogue to Langenkamp—in which she did several takes of her saying dialogue to Matt Dillon's character; The Outsiders and Rumble Fish did not include her scenes but helped her get into the Screen Actors Guild. These positive experiences made Langenkamp feel like she should attempt to pursue an acting career in Hollywood. She took sporadic breaks from college to pursue it.

While studying at Stanford University, she would travel to Los Angeles on the weekends to pursue auditions, where she had her first official Hollywood audition for Drew Denbaum's independent drama film Nickel Mountain (1984). While auditioning, her rented car got hit by a runaway truck on Cahuenga Boulevard. Denbaum and the casting director helped Langenkamp during the ordeal. She bonded with them and got cast in the lead role of Callie Wells. She has expressed regret for doing the nude scene as she feared voicing her discomfort while filming—as she was an up-and-coming actress. Her next role was Beth, the daughter of Joanne Woodward and Richard Crenna's characters in the CBS television film Passions (1984). The direction towards her character received praise. Langenkamp reflects, "It was a complex part. Richard plays a philandering husband who has a son with his mistress, so my character was acting like a bridge between these two families."

I really felt like I was gonna just bring myself to the set, and be as close to me as I could. I didn't prepare in the classic sense. I didn't know that was part of the whole thing. I was not a very trained actor at all. I'd taken classes, of course, but I just tried to learn my lines and be on my mark and do those right things.