The Witness is a 2015 American documentary film directed and produced by James D. Solomon. It follows William "Bill" Genovese as, decades after her death, he investigates the March 13, 1964, murder of his sister, Catherine Susan "Kitty" Genovese by Winston Moseley in Kew Gardens, a neighborhood in the New York City borough of Queens. Bill Genovese executive produced and narrated the film.

Upon its release, the film received positive reviews from critics. It was one of the fifteen documentaries (out of 145 entries) shortlisted for Best Documentary Feature at the 89th Academy Awards, though it was not one of the five final nominees for the award.