Forensic Files, originally known as Medical Detectives, is an American documentary television program that reveals how forensic science is used to solve violent crimes, mysterious accidents, and outbreaks of illness. The show was originally broadcast on TLC. It is narrated by Peter Thomas, produced by Medstar Television, and distributed by FilmRise, in association with truTV Original Productions. It broadcast 406 episodes from its debut on TLC in 1996 until its final episode in 2011. Reruns shown on HLN were initially retitled Mystery Detectives before settling on the main title of the show in 2014.

A version of the program was broadcast on Five in the United Kingdom, under the name Murder Detectives. Most of the 400 episodes are also available on the "FilmRise True Crime" channel that is managed by distributor FilmRise.

On October 1, 2019, HLN announced it had greenlit a revival of the show, titled Forensic Files II, which began airing on February 23, 2020. Due to long-time narrator Peter Thomas' death, the show is narrated by Bill Camp.