Meta-fiction universe

A meta-fiction universe, sometimes referred to as a meta-dimension, was a type of parallel universe where the lives of the residents of the Doctor's universe, such as the Doctor and Iris Wildthyme, existed only as fictional stories, typically presented in as science fiction television series.

Known universes

 * The parallel universe visited by the Eighth Doctor, Izzy Sinclair, and Beep the Meep (COMIC: TV Action!)
 * The parallel universe where edits to the timeline caused Doctor Who to never progress past the first episode, later visited by the First Doctor (AUDIO: Deadline, PROSE: All Our Christmases)
 * The parallel universe visited by the Eleventh Doctor, where he encountered a fan named Ally and a rogue Cyberman from the Void ( COMIC: The Girl Who Loved Doctor Who)
 * "Godfrey Porter's World", where Godfrey Porter wrote The Outlaws, an episode featuring the First Doctor and Robin Hood (PROSE: The Thief of Sherwood)
 * A meta-dimension where Iris Wildthyme existed as the main protagonist in the seventeen episode long series, The Iris Wildthyme Show. (PROSE: Wildthyme Beyond!)

In N-Space
Doctor Who also existed as a fictional series within the Doctor's own universe of N-Space. (TV: Remembrance of the Daleks, In the Forest of the Night, PROSE: Bafflement and Devotion, The Terror of the Umpty Ums, WC: The Zygon Isolation)

Behind the scenes

 * It is unclear if any of the listed meta-fiction universes are one and the same.