The One

The One has several meanings pertinent to the Doctor Who universe.

In-universe

 * The One (spaceship), a sentient spaceship. (PROSE: Doctor Who and the Invasion from Space)
 * The One, first incarnation of the Eleven. (AUDIO: The Eleven, The Satanic Mill)

Real world

 * The One (comic story)
 * The One (graphic novel)
 * The One Doctor (audio story)
 * The One Place (short story)
 * The One Second Hour (short story)