Doctor Who universe

The Doctor Who Universe or Whoniverse is a term used by fans to describe the fictional universe in which the stories and events portrayed in the television series Doctor Who and other stories set in other media set, to distinguish them from events in the real world. As official television productions based on the main series, K-9 & Company, Torchwood and The Sarah Jane Adventures also take place in the Doctor Who Universe.

A related term, Expanded Universe, borrowed from Star Wars fandom, describes persons, events, and stories depicted in the various spin-off materials, as their canonicity is a matter of debate, as well as personal taste and opinion. Some elements of the Expanded Universe have made their way into the mainstream Doctor Who universe. Examples include the two-part 2007 episode Human Nature/The Family of Blood, which was adapted from the novel Human Nature, the 2005 episode Dalek which was adapted from the Big Finish audio drama Jubilee, and The Monsters Inside, a BBC Books novel the setting of which is referenced in the 2005 episode Boom Town.