|Phone Call from a Stranger (1952) [Eddie Hoke]: Killed in a plane crash, along with Michael Rennie and Shelley Winters.
Dr. Strangelove: Or, How I Learned to Stop Worrying and Love the Bomb (1964) [Colonel Bat Guano]: Killed (along with everybody else in the world) when the Soviets' doomsday device goes off; we only see a series of nuclear explosions at the end of the movie.
Kraft Suspense Theatre: Charlie, He Couldn't Kill a Fly (1964) [Charlie Kling]: Falls to his death over a railing.
Stagecoach (1966) [Luke Plummer]: Shot to death in a shoot-out with Alex Cord in a saloon. (Thanks to Richard)
The War Wagon (1967) [Wes Fletcher]: Shot in the chest by a Native American warrior after Keenan pulls a knife on him. (Thanks to Stephen)
Welcome to Hard Times (Killer on a Horse) (1967) [Zar]: Shot in the chest by Warren Oates (who had mistaken him for Aldo Ray) when Keenan runs out of the burning saloon.
Mackenna's Gold (1969) [Sanchez]: Shot to death, along with several other bandits and townspeople, in an ambush by the cavalry.
The Manipulator (B.J. Lang Presents) (1971) [Old Charlie]: Stabbed in the chest with a sword by Mickey Rooney in Mickey's warehouse "film studio," as Luana Anders looks on in horror.
Pretty Maids All in a Row (1971) [Chief John Poldaski]: Neck snapped (off-screen) by Rock Hudson; his body is shown afterwards (along with Joy Bang's) lying on the football field the next morning.
The Mechanic (Killer of Killers) (1972) [Big Harry McKenna]: Killed by Charles Bronson. (Thanks to Michael)
The Devil's Rain (1975) [Sheriff Owen]: Explodes (due to being demonically possessed) after falling into a pit during a struggle with Tom Skerritt. (Thanks to Michael)
Piranha (1978) [Jack]: Bleeds to death after the piranhas eat his feet. (Thanks to Michael)
Dallas: Jock's Trial Part 2 (1980) [Willard 'Digger' Barnes]: Dies of a combination of health problems (malnutrition, alchoholism, and a genetic disease) with Victoria Principal by his bedside. (Thanks to PortsGuy)
Black Moon Rising (1986) [Iron John]: Killed (off-screen) by Lee Ving's thugs; his body is shown afterwards when Tommy Lee Jones discovers him. (Thanks to Michael)