Great Day in the Morning is a 1956 American Technicolor Superscope western film directed by Jacques Tourneur and starring Virginia Mayo, Robert Stack, and Ruth Roman.

In 1861, just prior to the outbreak of the Civil War, Owen Pentecost is a man from North Carolina who comes west to Denver in the Colorado Territory on a whim.

In a Denver hotel saloon, Owen wins a poker game with the owner, Jumbo Means, who bet his estate on the last hand.

The Philadelphia Inquirer wrote: "There's so much feudin' and fussin' and talk about the possibility of Civil War, that when the flag at Fort Sumter is fired on it comes as both anticlimax and relief....As in several recent films, the cast is considerably better than the material.

And so, to their credit, have Robert Stack, Ruth Roman, Virginia Mayo, Alex Nicol, Raymond Burr, young Donald MacDonald, Leo Gordon and Regis Toomey.