"The Door" is the eighth episode and mid-season premiere of the sixth season of the post-apocalyptic horror television series Fear the Walking Dead. The 77th episode overall, "The Door" was released on the streaming platform AMC+ on April 4, 2021, in the United States, and aired on television on AMC one week later, on April 11, 2021. The episode was directed by Michael Satrazemis and written by Andrew Chambliss and Ian Goldberg.

The sixth season of Fear the Walking Dead, an American horror-drama television series on AMC, premiered on October 11, 2020, and concluded on June 13, 2021, consisting of sixteen episodes. The series is a companion series to The Walking Dead, which is based on the comic book series of the same name by Robert Kirkman, Tony Moore, and Charlie Adlard. The executive producers are Kirkman, David Alpert, Greg Nicotero, Gale Anne Hurd, Scott M. Gimple, Andrew Chambliss, and Ian B. Goldberg, with Chambliss and Goldberg as showrunners for the third consecutive season.