Hilary Ann Swank (born July 30, 1974) is an American actress. Her Hollywood film career began with a small part in Buffy the Vampire Slayer (1992) and then a major part in The Next Karate Kid (1994), where she played Julie Pierce, the first female protégé of the sensei Mr. Miyagi. She has become known for her two Academy Award-winning performances: first as Brandon Teena, a transgender man (FTM) in the movie Boys Don't Cry (1999), and a struggling waitress-turned-boxer, Maggie Fitzgerald, in Million Dollar Baby (2004).

Swank was born in Lincoln, Nebraska, the daughter of Judy (née Clough), a secretary and dancer, and Stephen Swank, who was an officer in the Air National Guard and later a traveling salesman. She has a brother, Dan. Many of her family members hail from Ringgold County, Iowa. Swank came from humble beginnings, particularly as a child growing up in a trailer park near Lake Samish in Bellingham, Washington, to which she moved at age six, after having lived in Spokane, Washington. Swank has described her younger self as an "outsider" who felt that she belonged "only when a book or a movie, and could get involved with a character," and was thus inspired to become an actress.

When Swank was nine years old, she made her first appearance on stage starring in The Jungle Book. She became involved in school and community theater programs, including those of the Bellingham Theatre Guild. She went to Sehome High School in Bellingham until she was sixteen. Swank also competed in the Junior Olympics and the Washington state championships in swimming; she ranked fifth in the state in all-around gymnastics (which would come in handy when starring in The Next Karate Kid (1994) years later). Swank's parents separated when she was thirteen, and her mother, supportive of her daughter's desire to act, moved to Los Angeles, where they lived out of their car until Swank's mother saved enough money to rent an apartment. Swank has described her mother as the inspiration for her acting career and her life. In California, Swank enrolled in South Pasadena High School (although she later dropped out of school) and started acting professionally. She helped pay the rent with the money she earned appearing in television programs such as Evening Shade and Growing Pains.