Marie M. Muchmore (August 5, 1909 – April 26, 1990) was one of the witnesses to the assassination of U.S. President John F. Kennedy in Dallas, Texas, on November 22, 1963. A color 8 mm film that Muchmore photographed is one of the primary documents of the Kennedy assassination. The Muchmore film, with other 8 mm films taken by Abraham Zapruder and Orville Nix, was used by the Warren Commission to investigate the assassination and to position the presidential limousine in a forensic recreation of the event in May 1964.
Muchmore was an employee of Justin McCarty dress manufacturers in Dallas, about four blocks from Dealey Plaza. She sold her undeveloped 8mm film of the Kennedy assassination to United Press International for $1,000 on November 25, 1963. In her initial interview with the FBI ten days later, she denied taking any pictures of the assassination scene. She was reinterviewed by the FBI after a frame enlargement from her film appeared in a commemorative book published in January 1964.