Darren

 or Derren appears several time in the Doctor Who universe and the pertinent 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 (Vincent and the Doctor).

As only name

 * Dahh-Ren, incorrectly referred to as "Darren" (TV: Oxygen)
 * Darren (Herald of the Dawn) (AUDIO: Herald of the Dawn)
 * Darren (A Hundred Words from a Civil War) (PROSE: A Hundred Words from a Civil War)
 * Darren (Invasion of the Bane) (TV: Invasion of the Bane)
 * Darren (Terra Incognita) (PROSE: Terra Incognita)

As first name

 * Derren Brown (TV: The Day of the Doctor et al.)
 * Darren Green (AUDIO: The Book of Kells)
 * Darren Jackson (PROSE: Christmas on the Moon)
 * Darren Lucas (PROSE: Trace Memory)
 * Darren Pye (PROSE: Winner Takes All)
 * Darren Scott (COMIC: Broken)

Places

 * Darren (continent), a region on Skaro (COMIC: Genesis of Evil)

Television

 * Darren Dupree Washington, who played a SWAT leader in TV: Immortal Sins
 * Darren Morfitt, who played Marco in TV: The Time of Angels / Flesh and Stone
 * Derren Nesbitt, who played Tegana in TV: Marco Polo
 * Darren Plant, who played the infant John Benton in TV: The Time Monster
 * Darren Swain, who played a Time Lord soldier in TV: The Day of the Doctor

Audio

 * Darren Boyd, who played Hemmings in AUDIO: The Shadow of London
 * Darren Strange, who voiced Kendrick and the Butcher in The Sleeping Blood

Cameramen

 * Darren Chesney, a camera trainee for Doctor Who Series 5

Drivers

 * Darren Bousie, a construction driver for Doctor Who Series 11
 * Darren Crowlegroves, a driver for Doctor Who Series 5
 * Darren Leen, a driver for TV: Voyage of the Damned and The Unicorn and the Wasp

Writers

 * Darren Goldsmith, writer of AUDIO: Chain Reaction
 * Darren Jones, writer of several BBC Audio and Big Finish Productions audio stories
 * Darren Sellars, writer of PROSE: Never Seen Cairo and Utopia

Other

 * Darren Byford, a 3D artist for TV The Pandorica Opens / The Big Bang and CG supervisor for Milk VFX
 * Darren Cohen, who designed The Official 1997 Calendar: Doctor Who: Heroes & Villains
 * Darren Crines, a sound recordist for HOMEVID: Auton Diaries
 * Darren Fereday, a concept artist for Doctor Who Series 10, 11, and 12
 * Darren Frankel, a visual effects producer for TV: The Name of the Doctor and The Angels Take Manhattan
 * Darren Garrett, animation director for TV: Dreamland
 * Darren Mills, an art director for GAME: Blood of the Cybermen and City of the Daleks
 * Darren Quinn, a grip for TV: The Curse of Fatal Death
 * Darren Robinson, a prosthetics technician for Millennium FX
 * Darren Scott (interviewer), an interviewer for Doctor Who Magazine
 * Darren Williams, a music recording engineer for TV: The Ghost Monument