Editing Logopolis (section)

{{Use dmy dates|date=February 2015}}
{{Use British English|date=February 2015}}
{{Infobox Doctor Who episode
| number             = 115<ref>From the ''[[Doctor Who Magazine]]'' series overview, in issue 407 (pp. 26–29). ''[[The Discontinuity Guide]]'', which counts the unbroadcast serial ''[[Shada (Doctor Who)|Shada]]'', lists this as story number 116. [[DVD region code#1|Region 1]] DVD [[Doctor Who DVD releases|releases]] follow ''The Discontinuity Guide'' numbering system.</ref>
| serial_name        = Logopolis
| show               = DW
| type               = serial
| image              = 
| caption            = 
| doctor             =
[[Tom Baker]] – [[Fourth Doctor]]
| companions         = 
* [[Matthew Waterhouse]] – [[Adric]]
* [[Sarah Sutton]] – [[Nyssa (Doctor Who)|Nyssa]]
* [[Janet Fielding]] – [[Tegan Jovanka]]
| guests             = 
*[[Anthony Ainley]] – [[The Master (Doctor Who)|The Master]]
*[[Delore Whiteman|Dolore Whiteman]] – Aunt Vanessa
*[[John Fraser (actor)|John Fraser]] – The Monitor
*[[Tom Georgeson]] – Detective Inspector
*[[Christopher Hurst (actor)|Christopher Hurst]] – Security Guard
*[[Peter Davison]] – [[Fifth Doctor]]
| director           = [[Peter Grimwade]]
| writer             = [[Christopher H. Bidmead]]
| script_editor      = Christopher H. Bidmead
| producer           = [[John Nathan-Turner]]
| executive_producer = [[Barry Letts]]
| composer           = [[Paddy Kingsland]]
| production_code    = 5V
| series             = [[Doctor Who (season 18)|Season 18]]
| length             = 4 episodes, 25 minutes each
| started            = {{Start date|1981|2|28|df=yes}}
| ended              = {{End date|1981|3|21|df=yes}}
| preceding          = ''[[The Keeper of Traken]]''
| following          = ''[[Castrovalva (Doctor Who)|Castrovalva]]''
}}
'''''Logopolis''''' is the seventh and final serial of the [[Doctor Who (season 18)|18th season]] of the British [[science fiction television]] series ''[[Doctor Who]]'', which was first broadcast in four weekly parts on [[BBC One|BBC1]] from 28 February to 21 March 1981. 

The serial is set on the planets [[Earth]] and Logopolis. In the serial, the Doctor, a [[Time travel in fiction|time traveller]] from the planet [[Gallifrey]], forms a temporary truce with his arch-enemy [[The Master (Doctor Who)|the Master]] ([[Anthony Ainley]]) to stop the unravelling of the universe which the Master had started by accident.

''Logopolis'' is [[Tom Baker]]'s last story as the [[Fourth Doctor]], and marks the first appearances of [[Peter Davison]] as the [[Fifth Doctor]] and [[Janet Fielding]] as new [[Companion (Doctor Who)|companion]] [[Tegan Jovanka]].

The serial received positive reviews with many calling it a worthy farewell to Tom Baker as the Fourth Doctor. Baker's performance received much praise from critics and fans. Ainley's performance as the Master also received praise despite his camp persona.