In Old Montana is a 1939 American Western film directed by Raymond K. Johnson and starring Fred Scott, Jean Carmen and John Merton.

The series of events chronicles here took place in the Lobo Valley just below the fertile grazing lands of the Powder River Basin.

Although frankly a Western story, with fictitious characters, each one originally had its counterpart in fact.Fred Dawson (Scott), a serving cavalry officer, requests leave of absence to visit his father, who has been shot.

His commanding officer grants the request, but asks him to carry out an investigation at the same time into the current conflict between the sheepherders and cattlemen in the area.

Later, Dawson and Ed Brandt (John Merton) have a fist fight, after which it emerges that Theodore Jason (Frank LaRue) has secretly been creating all the trouble for his own ends, hoping that the cattlemen and sheepherders would run out of money so that he could foreclose on their debts.