Lawrence Donald "Larry" Clark (born January 19, 1943) is an American film director, photographer, writer and film producer who is best known for the movie Kids and his photography book Tulsa. His most common subject is youth who casually engage in illegal drug use, underage sex and violence, and who are part of a specific subculture, such as surfing, punk rock or skateboarding.

Clark was born in Tulsa, Oklahoma. He learned photography at an early age. His mother was an itinerant baby photographer, and Clark himself was enlisted in the family business from the age of 13.

In his mid-teens, Clark began injecting amphetamines with his friends in 1959. Always armed with a camera, from 1963 to 1971 Clark produced pictures of his drug-shooting coterie that have been described by critics as "exposing the reality of American suburban life at the fringe and for shattering long-held mythical conventions that drugs and violence were an experience solely indicative of the urban landscape."

Clark attended the Layton School of Art in Milwaukee, Wisconsin where he studied under Walter Sheffer and Gerhard Bakker. In 1964 he moved to New York City to freelance but was drafted within two months to serve in the Vietnam War. His experiences there led him to publish the book Tulsa in 1971. It was a landmark work: a photo documentary illustrating his young friends' drug use in black and white. His follow-up was Teenage Lust (1983), an "autobiography" of his teen past through the images of others. It included his family photos, more teenage drug use, graphic pictures of teenage sexual activity, and young male hustlers in Times Square, New York City. Clark constructed a photographic essay titled "The Perfect Childhood" that examined the effect of media in youth culture. His photographs are part of public collections at several prestigious art museums including the Whitney Museum of American Art, and the Museum of Fine Arts, Boston.

In 1993, Clark directed Chris Isaak's music video "Solitary Man". This experience developed into an interest in directing. After publishing other photographic collections, Clark met Harmony Korine in New York and asked Korine to write the screenplay for his first feature film, Kids which was released to controversy and moderate critical acclaim in 1995. Clark is scheduled to direct the film adaption of Richelle Mead's novel Vampire Academy.

Clark is represented by Simon Lee Gallery in London and the Luhring Augustine Gallery in New York City. He has one son and one daughter.