The universe inhabited by [[Series/DoctorWho the Doctor]]. It is a large and unwieldy beast full of internal contradictions. Fortunately, it's a really, ''really'' big universe encompassing, er, the entire universe and a history stretching, oh, from the Big Bang to 100 trillion years in the future (plus an alternate universe or five, which apparently includes the Franchise/StarTrekExpandedUniverse).

Due to the nature of the show, any timeline described here can be overwritten, split, or contradicted -- both by its own canon and by the countless spin-off media of the Franchise/DoctorWhoExpandedUniverse. In turn, the core canon can contradict or overwrite the expanded universe, but can also canonise bits of it at times. This flexibility is thanks (per various different WordOfGod sources such as series writer Paul Cornell) to the fact that other than a general rule that says no one should have to purchase merchandise to understand the TV series itself, the BBC has never put in a hard and fast rule as to what is "canon", which contrasts with the ''Franchise/StarTrek'' franchise where its owners (Paramount) and creator (Creator/GeneRoddenberry) put in a longstanding rule that only what appears on screen counted.

The Whoniverse resides in (or sometimes near) the Softest end of the MohsScaleOfScienceFictionHardness. Sometimes it's [[GenreBusting another genre entirely]], just with AliensAndMonsters.

!!!The main series set in the Whoniverse:

* ''Series/DoctorWho'' (1963-1989; 1996; 2005-present)
* ''Series/K9AndCompany'' (1981): Single-episode pilot special, involving Sarah Jane Smith and K-9 investigating mysteries in the countryside.
* ''Series/{{Torchwood}}'' (2006-2011)[[note]]The BBC has technically not cancelled Torchwood, but no new seasons have been commissioned since 2011 and as of 2014 none are planned for the forseeable future[[/note]]
** ''Series/TorchwoodChildrenOfEarth'' (third series of ''Torchwood'', 2009, a mini-series)
** ''Series/TorchwoodMiracleDay'' (fourth series of ''Torchwood'', 2011, a 10-episode arc)
* ''Series/TheSarahJaneAdventures'' (2007-2011)
* '' Series/{{K9}}'' (2009-2010)[[note]]A non-BBC production; as such its canonicity with regards to the rest of the Whoniverse is questionable. To date only one season has aired; as of 2014 a second season remains officially in pre-production mode.[[/note]]
* AudioPlay/BigFinishDoctorWho (1999-present)[[note]]The Big Finish audio dramas have always been officially BBC-licensed spin-offs of ''Doctor Who'', however up until 2013 they were considered part of the "expanded universe" (see below). This changed with the 2013 anniversary mini-episode "The Night of the Doctor" which established that they exist within the continuity of the TV series.[[/note]]
** ''Franchise/BerniceSummerfield''
** ''AudioPlay/{{Gallifrey}}''
** ''AudioPlay/SarahJaneSmith''

!!!Behind-the-scenes TV series (unless noted, obviously they do not take place within the Whoniverse itself):

* ''Series/DoctorWhoConfidential'' (2005-2011): A behind the scenes look at the revived series of ''Doctor Who''.
** Its final episode in 2011 included a mini-episode, "Death is the Only Answer".
** Revived in 2014 as an online-only series titled ''Doctor Who Extra''.
* ''Series/TotallyDoctorWho'' (2006-2007): Another behind the scenes series, but geared to younger viewers.
** Its second and final season included an animated ''Doctor Who'' serial, "The Infinite Quest".
* ''Series/TorchwoodDeclassified'' (2006-2011)[[note]]As with the parent series, its future is currently in limbo pending whether any future ''Torchwood'' seasons are produced.[[/note]]: The equivalent to ''Confidential'' for ''Torchwood''. Moved to a DVD feature after series 2.
* ''Film/AnAdventureInSpaceAndTime'' (2013): A ninety-minute drama about the show's creation, focusing on Creator/WilliamHartnell's era.

!!!The Franchise/DoctorWhoExpandedUniverse

A full listing with accompanying tropes, release dates and background information of these stories can be found on the Franchise/DoctorWhoExpandedUniverse page. Works and media with their own pages on this website include:

* ''Magazine/DoctorWhoMagazine'' (including a comic strip that has run since 1979)
* ComicBook/BBCBooksDoctorWhoGraphicNovels
* Literature/DoctorWhoNovelisations
* ''Literature/DoctorWhoNewAdventures ''
** Franchise/BerniceSummerfield
* ''Literature/DoctorWhoMissingAdventures''
* ''Literature/ContinuityErrors''
* ''Literature/EighthDoctorAdventures ''
** ''Literature/FactionParadox''
* ''Literature/PastDoctorAdventures''
* ''Literature/TimeHunter''
* ''Literature/NewSeriesAdventures''
* ''Radio/ThirdDoctorRadioDramas''
* ''WebAnimation/DeathComesToTime''
* ''WebAnimation/ScreamOfTheShalka''
* ''Recap/DoctorWhoTheCurseOfFatalDeath''
* ''ComicBook/DoctorWhoIDW''
** ''ComicBook/DoctorWhoTheForgotten''
** ''ComicBook/StarTrekTheNextGenerationDoctorWhoAssimilation2''
** ''ComicBook/DoctorWhoPrisonersOfTime''
* ''ComicBook/DoctorWhoTitan''
* ''Film/DrWhoAndTheDaleks''
** ''Film/DaleksInvasionEarth2150AD''
* ''Radio/TorchwoodTheLostFiles''
* ''Franchise/IrisWildthyme''
* ''VideoGame/DoctorWhoWorldsInTime''
* ''Pinball/DoctorWho Pinball''
* ''TabletopGame/TimeLord''
* ''VideoGame/DoctorWhoLegacy''
!!Common tropes:

* AliensAndMonsters: In about 85% of any television set in the Whoniverse. ''K-9 & Company'', in a [[spoiler:{{subversion}} of viewer's expectations, had a ScoobyDooHoax]]. ''Torchwood'' has humans as the main enemy or a threat alongside alien creatures in several instances, and in one episode had humans as the "monsters" with no known extraterrestrial or supernatural influences. Early seasons of ''Doctor Who'' also averted the trope by featuring occasional purely historical stories in which the only alien aspect was the Doctor himself (this format was common between 1964 and 1966, and was revived for a one-off story in 1982, but has yet to be revisited in the modern era).
* AliensInCardiff
* AlienInvasion: A signature trope.
* AliensSpeakingEnglish
** AliensOfLondon
* AllMythsAreTrue: Vampires, werewolves, fairies, Satan and minotaurs have all appeared, more or less as described by mythology. Other variants of the above have also appeared, including minotaurs... again. And let's not forget two different explanations for the Loch Ness Monster!
* AncientAstronauts
* BeethovenWasAnAlienSpy
* BroadStrokes: Continuity tends to operate on this basis in regards to the universe itself, less so for the characters.
* CanonWelding: During the period when ''Magazine/DoctorWhoMagazine'' was owned by Marvel UK, there were some variously subtle hints dropped about links between the Whoniverse and the MarvelUniverse. Michael Moorcock's Eleventh Doctor spin-off novel ''The Coming of the Terraphiles'' is a full-on IntercontinuityCrossover with Moorcock's "Second Ether" novels, which means that the Whoniverse is also part of Moorcock's multiverse. And Chris Boucher's audio spin-off ''Kaldor City'' and Fourth Doctor novel ''Corpse Marker'' both strongly hint that ''Doctor Who'' and ''Series/BlakesSeven'' share a universe. There have also been contradictory hints given that at least some aspects of Creator/DouglasAdams' ''Franchise/TheHitchhikersGuidetotheGalaxy'' may intersect with the Whoniverse.
* DoingInTheWizard: Though ''Series/TheSarahJaneAdventures'' and ''Series/{{Torchwood}}'' in particular allow the wizard to live.
* EarthIsTheCenterOfTheUniverse
* EldritchAbomination: Has its own page.
* FantasyKitchenSink (especially so in the [[Franchise/DoctorWhoExpandedUniverse Expanded Universe]])
** The show drifted this way over the course of its very long run, starting out as ''relatively'' hard science fiction, with some lapses, such as the Celestial Toymaker and the Land of Fiction. The turning point was possibly the Key to Time StoryArc, which featured two god-like Anthropomorphic Personification of Order and Chaos, respectively, and then did [[HandWave not try too hard]] to call them anything else. Even so, fans complained when ''Silver Nemesis'' depicted Lady Peinforte using magic and ''naming'' it as such, though this was [[{{Handwave}} handwaved]] the next season as not literal magic, as such, but really the work of a CosmicHorror called Fenric.
* HeroesRUs: UNIT, Torchwood, Sarah Jane's bunch...
* InvisibleAliens: (The Whoniverse also has several species of literally ''invisible'' aliens.)
* MagicFromTechnology
* {{Masquerade}}: Some modern stories set in the Whoniverse have suggested that [[TheUnmasquedWorld ordinary humans have now gotten to accept that aliens exist...]] Took them long enough.
* MrExposition: The Doctor, Captain Jack, Sarah Jane, K-9, Mr Smith...
* OmniscientDatabase: Torchwood and Sarah Jane have the literal kind. The Doctor's (and Captain Jack's) wealth of knowledge and experience serves as the equivalent.
* SetRightWhatOnceWentWrong: More commonly, setting things right before they go wrong, often by means of a StableTimeLoop.
* SufficientlyAdvancedAlien
* SpaceIsMagic
* {{Technobabble}}: The {{Technobabble}} phrase ReverseThePolarity, in fact, originated in ''Series/DoctorWho''.
* ThereAreNoGlobalConsequences: Played straight in earlier years, but mostly averted on ''Series/{{Torchwood}}'' and Creator/RussellTDavies' run of ''Series/DoctorWho''.
* TimeTravel (as you may have gathered already)
* TimeyWimeyBall: With a universe this large and unwieldy, the time-line is so knotted that nobody could ever untangle it.
* WeirdScience
For tropes associated with ''Series/DoctorWho'', specifically, see that article.

Debate on the content of the Whoniverse is the stuff of legends. Countless works of the UniverseConcordance kind (some official, some not) try to keep them straight. Good luck, folks!