Cold case refers to a crime or accident that has not been solved and is not the subject of current criminal investigation, but for which new information could plausibly arise. New technical methods developed since the case can be used on the surviving evidence to re-analyse the causes, often with conclusive results.

A Cold Case is a 2002 novel by Philip Gourevitch. A film adaptation of the novel starring Tom Hanks was attempted, but the project did not enter production.