Who's Harry Crumb? is a 1989 American comedy-mystery film featuring John Candy as the title character. Paul Flaherty directed the film, which co-stars Annie Potts, Jeffrey Jones and Shawnee Smith. An uncredited cameo appearance is made by Jim Belushi. The story concerns the often incompetent, sometimes brilliant, private investigator Harry Crumb, who searches for a kidnapping victim.

John Franklin Candy was a Canadian actor and comedian who is best known for his work in Hollywood films. Candy first rose to national prominence in the 1970s as a member of the Toronto branch of the Second City and its SCTV sketch comedy series. He rose to international fame in the 1980s with his roles in comedic films such as Stripes, Splash, Brewster's Millions, Planes, Trains and Automobiles, Spaceballs, The Great Outdoors, Uncle Buck, and Cool Runnings. He also appeared in supporting roles in The Blues Brothers, National Lampoon's Vacation, Little Shop of Horrors, and Home Alone, and featured in dramatic roles in Only the Lonely and JFK.