The Lone Star Ranger is a Western novel published by Zane Grey in 1915.

The book takes place in Texas, the Lone Star State, and several main characters are Texan outlaws.

It follows the life of Buck Duane, a man who becomes an outlaw and then redeems himself in the eyes of the law.

At the outlaw hideout, he meets a kidnapped, beautiful young woman and wants to see her free.

They offer to get a governor's pardon for his illegal deeds if he will help to clear the frontier of major cattle rustlers and bank robbers.