This Earth Is Mine is a 1959 American drama film directed by Henry King and starring Rock Hudson and Jean Simmons.

The film portrays the lives and loves of the Rambeau family, a California winemaking dynasty trying to survive during Prohibition in the United States.

Months, and years, of lies, blackmail and conflict follow, ending with the romantic union of John and Elizabeth, and their commitment to the Rambeau winemaking heritage.

Napa Valley locations used for filming were: Local residents of the Napa Valley were used as extras in some scenes,[4] and the stars were taught proper vineyard procedures by locals — a difficulty for left-handed Rock Hudson, for whom a left-handed teacher had to be found to demonstrate the proper way to attach a bud from one plant to the root of another,[5] a scene important to the plot at the end of the film.

It is verbose and contradictory, and its complex plot relationships from Alice Tisdale Hobart's novel, "The Cup and the Sword" begin with confusion and end in tedium.

"In describing the intramural trials and tribulations besetting a wealthy clan of California vineyard owners, under the title "This Earth Is Mine," Universal-International has come up with an ambitious family saga as handsome as it is hollow.