Maria

 has several meanings pertinent to the Doctor Who universe and the 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

 * Maria (Child of Time) (PROSE: Child of Time)
 * Maria (Conduct Unbecoming) (AUDIO: Conduct Unbecoming)
 * Maria (Dead of Winter) (PROSE: Dead of Winter)
 * Maria (Hope) (PROSE: Hope)
 * Maria (Son of the Dragon) (AUDIO: Son of the Dragon)
 * Maria (The Wanderer) (AUDIO: The Wanderer)
 * Maria (The Wishing Beast) (AUDIO: The Wishing Beast)
 * Maria (Whatever Happened to Sarah Jane?) (TV: Whatever Happened to Sarah Jane?)

As first name

 * Maria Bonaventura (PROSE: Framed)
 * Maria Bruno (PROSE: Into the Silence)
 * Maria Bulwell (PROSE: The Taint)
 * Maria Candido (TV: The Categories of Life)
 * Maria Chavez (PROSE: Cat's Cradle: Warhead)
 * Maria Gonzalez (COMIC: Revolutions of Terror, etc.)
 * Maria Jackson, one of the group defending Earth from Bannerman Road (TV: Invasion of the Bane, et al)
 * Maria Owen (PROSE: Not in My Back Yard)

As name of object, publication or other in-universe item

 * Santa Maria (PROSE: Eye of Heaven)

Vocal

 * Maria Darling, who voiced Ashantra in AUDIO: The Green-Eyed Monsters
 * Maria McErlane, who voiced Bianca in AUDIO: The Wormery and Matka in AUDIO: Year Zero and Dead Man's Switch

Television

 * Maria Franchi, who was a costume assistant on Doctor Who