Rufus King (1893–1966) was an American author of Whodunit crime novels. He created four series of detective stories: the first one with Reginald De Puyster, a sophisticated detective similar to Philo Vance; the second one with his more famous character, Lieutenant Valcour; Colin Starr, who appeared in four stories in the Strand Magazine during 1940/41; and Detective Bill Duggan, who appeared in three stories in 1956/57. The Bill Duggan stories include King's most famous short work, Malice in Wonderland (which also loaned its title to his 1958 hardcover short story collection).

Modern critics are rediscovering Rufus King's work. Mike Grost, on Golden Age Detective, features a long writeup of King, stating: "King had a vivid writing style, with colorful characters, events, and images. He was clearly a born writer."