The Dark Tower V: Wolves of the Calla is a dark fantasy novel by American writer Stephen King. It is the fifth book in his The Dark Tower series. The book continues the story of Roland Deschain, Eddie Dean, Susannah Dean, Jake Chambers, and Oy as they make their way toward the Dark Tower. The subtitle of this novel is Resistance. Prior to the novel's publication, two excerpts were published: "Calla Bryn Sturgis" was published in 2001 on Stephen King's official site, and "The Tale of Gray Dick" was published in 2003 in McSweeney's Mammoth Treasury of Thrilling Tales. Both excerpts were incorporated in revised form into the full version of the 2003 novel. Wolves of the Calla was nominated for the Locus Award for Best Fantasy Novel in 2004.

The Dark Tower is a series of eight novels, one novella, and a children's book written by American author Stephen King. Incorporating themes from multiple genres, including dark fantasy, science fantasy, horror, and Western, it describes a "gunslinger" and his quest toward a tower, the nature of which is both physical and metaphorical. The series, and its use of the Dark Tower, expands upon Stephen King's multiverse and in doing so, links together many of his other novels.