"The Rain King" is the eighth episode of the sixth season of the American science fiction television series The X-Files. It premiered on the Fox network on January 10, 1999. "The Rain King" was written by Jeffrey Bell and directed by Kim Manners. The episode is a "Monster-of-the-Week" story, unconnected to the series' wider mythology. "The Rain King" earned a Nielsen household rating of 12.5, being watched by 21.2 million people in its initial broadcast.