"Firewalker" is the ninth episode of the second season of the American science fiction television series The X-Files. It premiered on the Fox network on November 18, 1994. It was written by Howard Gordon, directed by David Nutter, and featured guest appearances by Bradley Whitford, Leland Orser and Shawnee Smith. The episode is a "Monster-of-the-Week" story, unconnected to the series' wider mythology.

The second season of the science fiction television series The X-Files commenced airing on the Fox network in the United States on September 16, 1994, concluded on the same channel on May 19, 1995, after airing all 25 episodes. The series follows Federal Bureau of Investigation special agents Fox Mulder and Dana Scully, portrayed by David Duchovny and Gillian Anderson respectively, who investigate paranormal or supernatural cases, known as X-Files by the FBI.