Meta-fiction universe

A meta-fiction universe, sometimes referred to as a meta-dimension, was a parallel universe where the Doctor's life and adventures were fictional stories, typically presented in a science fiction series called Doctor Who, or in one case, Iris Wildthyme. (PROSE: Wildthyme Beyond!)

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.