Simon

 appears in several contexts pertinent to the Doctor Who universe and the relevant real world. They are listed below in alphabetical order by surname. If no surname is available, alphabetization occurs by the disambiguation term — that is, the bit between the parentheses in a title like Waitress (Random Shoes). As a surname it is often styled in Simmons.

As only name

 * Simon (DW: The Stolen Earth)
 * Simone (DWA: The Mutant Turnip)
 * Simmons (DW: Dalek)
 * Simmons (DW: The Impossible Astronaut)

As first name

 * Simon Craig (TWA: Hidden)
 * Simon Duval (DW: The Massacre of St Bartholomew's Eve)

Guest

 * Simon Callow, who played Charles Dickens in DW: The Unquiet Dead and reprised his role in a brief cameo in DW: The Wedding of River Song.
 * Simon Fisher-Becker, who played Dorium in DW: The Pandorica Opens, A Good Man Goes to War and The Wedding of River Song.
 * Simon Lack, who played Kettering in DW: The Mind of Evil and Zadek in DW: The Androids of Tara.
 * Simon Pegg, who voiced Don Chaney in BFA: Invaders from Mars and played the Editor in DW: The Long Game.

Featured

 * Simon Chadwick, who played Cal Kilburne in SJA: Enemy of the Bane.
 * Simon Day, who played the Steward in DW: The End of the World
 * Simon Dutton, who played Alistair in DW: The Time of Angels.
 * Simon Gregor, who played Carlo in DW: The Vampires of Venice
 * Simon Greenall, who played Mr Skinner in DW: Love & Monsters.
 * Simon Gipps-Kent, who played Seth in The Horns of Nimon.
 * Simon Rouse, who played Hindle in DW: Kinda and Master John Kincaid in BFA: The Witch from the Well.
 * Simon Shackleton, who played Bob in TW: Fragments.
 * Simon Slater, who played Edwardes in DW Terror of the Vervoids.
 * Simon Pearsall, who played Whitey in DW: Gridlock.
 * Simon Williams, who played Group Captain Ian Gilmore in DW: Remembrance of the Daleks.

Monster specialists

 * Simon Cain, who played Curly in DW: The Enemy of the World and a Silurian in DW: Doctor Who and the Silurians.
 * Simon Preston-Barnes, who played the Lochnessy Alien in K9TV: Liberation and a CCPC in K9TV: The Last Precinct.

Extra

 * Simon Legree, who played a UNIT Sergeant in DW: The Time Monster.
 * Simon Ludders, who played a patient in DW: New Earth.
 * Simon Shaw, who played a Tigellan Guard in DW: Meglos.
 * Donald Simons, who played several uncredited roles in the Doctor Who serials.
 * Simon Sutton, who played the Lookout in DW: Planet of Fire.
 * Simon Thomas, who played Mr Danes in DW:  The End of Time

Vocal

 * Simon Coady, who voiced the Video Commentary in DW: Paradise Towers.
 * Simon Kingsley, who voiced Septimus in BFBS: The Adventure of the Diogenes Damsel.
 * Simon Ockenden, the narrator of the 2|entertain documentaries.
 * Simon Poland, who voiced the 456 in TW: Children of Earth.
 * Simon Rouse, who played Master John Kincaid in BFA: The Witch from the Well.
 * Simon Williams, who reprised his role as Ian Gilmore in Counter-Measures, and voiced Paul Addison and Shara in BFA: Nekromanteia and Lord Ruthven in JAL: The Ruthven Inheritance.

As surname

 * Caroline Mary Simmons, who played the uncredited role of a Cyberman android in DW: Earthshock.
 * Neville Simons, who played Frank Michaels in DW: The Ambassadors of Death.
 * William Simons, who played Mandrel in DW: The Sun Makers.

Cameramen

 * Simon Archer BSC, the director of photography on DW: The Lodger.
 * Simon Ridge, an assistant camera for Doctor Who.

Directors

 * Simon Morris, a 1st assistant director for Doctor Who.

Producers

 * Simon Barnes, a producer for K9.

Sound design, effects, music

 * Simon Fraser, a sound recordist for Doctor Who.

Visual effects

 * Simon C. Holden, a 2D artist for some episodes of RTD-era Doctor Who and an on-set visual effects supervisor on the last half of series 1 of The Sarah Jane Adventures.
 * Simon McDonald, the visual effects designer for Castrovalva.
 * Simon Taylor, the visual effects designer on DW: Paradise Towers.
 * Simon Wicker, a digital matte painter credited on several episodes in series 3 and 4 of the BBC Wales version of Doctor Who.

Writers

 * Simon Nye, the writer of Amy's Choice for the 2010 series of Doctor Who.

Other

 * Simon Winstone, an editor of the Virgin Bernice Summerfield New Adventures line and a Script Editor for Doctor Who.

Prose

 * Simon Bucher-Jones
 * Simon Clark, who wrote TN: The Dalek Factor.
 * Simon A. Forward, a prose and audio writer and longtime Doctor Who fan.
 * Simon Guerrier, the author of several Doctor Who novels, audio dramas and short stories.
 * Simon Messingham, an author who has written several Doctor Who novels.

Comics

 * Simon Furman, a comic and audio writer who has written several Doctor Who stories.
 * Simon Jowett, who wrote IHP: The Enlightenment of Ly-Chee the Wise and Star-Crossed.

Audio

 * Simon Furman, a comic and audio writer who has written several Doctor Who stories.
 * Simon Holub, a cover arttist for several of Big Finish Productions' Doctor Who Audio Drama range and The Companion Chronicles range.
 * Simon Power, who provided the music and sound effects for the BBC Audio releases of the Target Books novelisations.
 * Simon Robinson, who performs post production, sound design and music for Big Finish.

print

 * Simon Ellinas, Art Assistant for Doctor Who Magazine for a number of issues.
 * Simon Hugo, the editor of Torchwood Magazine.