Louis Dearborn L'Amour (; March 22, 1908 – June 10, 1988) was an American novelist and short-story writer. His books consisted primarily of Western novels (though he called his work "frontier stories"); however, he also wrote historical fiction (The Walking Drum), science fiction (Haunted Mesa), non-fiction (Frontier), as well as poetry and short-story collections. Many of his stories were made into films.

L'Amour's books remain popular and most have gone through multiple printings. At the time of his death almost all of his 105 existing works (89 novels, 14 short-story collections, and two full-length works of nonfiction) were still in print, and he was "one of the world's most popular writers".