The Colorado Kid is a mystery novel written by noted horror/fantasy novelist Stephen King for the Hard Case Crime imprint. Published in 2005, he book was issued in one paperback-only edition by the specialty crime and mystery publishing house. The third-person narrative concerns the investigation of the body of an unidentified man found on a tiny island off the coast of Maine. Lacking any identification or obvious clues, the case reaches nothing but repeated dead-ends. Over a year later the man is identified, but all further important questions remain unanswered. The two-man staff of the island newspaper maintain a longstanding fascination with the case, and twenty-five years later use the mysterious tale to ply the friendship and test the investigative mettle of a postgrad intern rookie reporter.

The Colorado Kid was loosely adapted into a television series in 2010 called Haven. The series was a joint US/Canadian production and began airing on the Syfy channel. Although some elements of the novel are addressed in the series, there are radical differences found between the central plot elements and the main characters.

The Colorado Kid has also been used as a nickname to describe Duke Crocker, one of the main characters on the series.