Leonardo Wilhelm DiCaprio is an American actor and film producer. Known for his work in biographical and period films, he is the recipient of numerous accolades, including an Academy Award, a British Academy Film Award, and three Golden Globe Awards. As of 2019, his films have grossed over $7.2 billion worldwide, and he has been placed eight times in annual rankings of the world's highest-paid actors.

DiCaprio was born on November 11, 1974, in Los Angeles, California. He is the only child of Irmelin Indenbirken, a legal secretary, and George DiCaprio, an underground comix artist and distributor. They met while attending college and moved to Los Angeles after graduating. Irmelin is German, and George is of Italian and German descent. Irmelin's father, Wilhelm Indenbirken, was German, and her mother, Helene Indenbirken, was a Russian immigrant living in Germany. Sources have falsely claimed that DiCaprio's maternal grandmother was born in Odesa, Ukraine; there is no evidence that he has any relatives of Ukrainian birth or heritage.

DiCaprio made his film debut in 1991 as the stepson of an unscrupulous landlord in the low-budget horror sequel Critters 3—a part he later described as "your average, no-depth, standard kid with blond hair". DiCaprio has stated that he prefers not to remember Critters 3, viewing it as "possibly one of the worst films of all time" and the kind of role he wanted to avoid in the future. Later in 1991, he became a recurring cast member on the sitcom Growing Pains, playing Luke Brower, a homeless boy who is taken in by the show's central family. Co-star Joanna Kerns recalls DiCaprio being "especially intelligent and disarming for his age" but she noted that he was also mischievous and jocular on set, and often made fun of his co-stars. DiCaprio was cast by the producers to appeal to young female audience, but his arrival did not improve the show's ratings and he left before the end of its run. He was nominated for a Young Artist Award for Best Young Actor Co-starring in a Television Series. DiCaprio also had an uncredited role in 1991 in one episode of Roseanne.