Trask

 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 (Random Shoes).

As only name

 * Trask (Alien Bodies), a Celestis agent (PROSE: Alien Bodies)
 * Trask (The Highlanders), Willie Mackay's partner in smuggling weapons (TV: The Highlanders)

As surname

 * Stewart Trask (PROSE: The Nuclear Option)