Killer of Sheep is a 1978 American drama film edited, filmed, written, produced, and directed by Charles Burnett. Shot primarily in 1972 and 1973, it was originally submitted by Burnett to the UCLA School of Film in 1977 as his Master of Fine Arts thesis. It features Henry G. Sanders, Kaycee Moore, and Charles Bracy, among others, in acting roles.

The film depicts the culture of urban African-Americans in Los Angeles' Watts district in a style often likened to Italian neorealism. Critic Dana Stevens described its plot as "a collection of brief vignettes which are so loosely connected that it feels at times like you're watching a non-narrative film." There are no acts, plot arcs or character development, as conventionally defined.

Killer of Sheep premiered at the Whitney Museum of American Art in New York on November 14, 1978. It did not receive a general release because Burnett had not secured rights to the music used in its production. The music rights were purchased in 2007 for US $150,000 and the film was restored and transferred from a 16 mm to a 35 mm print. Killer of Sheep received a limited release 30 years after it was completed, with a DVD release in late 2007. The film was restored by the UCLA preservationist Ross Lipman and produced on DVD by Steven Soderbergh and Milestone Films. In 1990, the film was selected for preservation in the United States National Film Registry by the Library of Congress as being "culturally, historically, or aesthetically significant".