An inquisitor was an official in an Inquisition led by the Roman Catholic Church.
Inquisitor may also refer to:
Fictional characters Imperial Inquisitor, fictional characters within Star Wars who are Force-sensitive beings that work for Darth Vader and form Emperor Palpatine's Inquisitorius Grand Inquisitor (Star Wars), a fictional character from Star Wars Rebels and leader of the Inquisitorius in the Star Wars Expanded Universe. Inquisitor (Doctor Who), a Time Lord featured throughout the twenty-third season of Doctor Who. Hogwarts High Inquisitor (Harry Potter), an ad hoc post held by the character Dolores Umbridge. The Inquisitor (Red Dwarf), the title character of the Red Dwarf episode of the same name. The Inquisitor, a character from Warhammer 40,000: Inquisitor – Martyr. The Inquisitor, the player character in Dragon Age: Inquisition.
Biology Inquisitor (genus), a sea snail genus in the family Pseudomelatomidae Calosoma inquisitor, a ground beetle species found in northern Africa, Europe and Asia
Software Inquisitor (hardware testing software), a Linux-based diagnostic software suite Inquisitor (search software), a search tool for Safari, Firefox, Internet Explorer and iPhone Inquisitor (video game), a 2009 role-playing game developed by Cinemax The Inquisitor (video game), a 2024 action-adventure video game
Others The Inquisitor (play), a 1797 play by Thomas Holcroft Inquisitor (tabletop game), a tabletop game set in the fictional Warhammer 40,000 universe Inquisitor (magazine), a game magazine published by Armorcast about Warhammer 40,000 "The Inquisitor" (Red Dwarf), an episode of the TV series, or the episode's title character The Inquisitor, an alternate title for the 1981 French film Garde à Vue The Inquisitor, an alternate title for the 1990 American film The Pit and the Pendulum "Inquisitor", a song by Raven from All for One Inquisitorial system, a legal system where the court or a part of the court is actively involved in determining the facts of the case
See also Grand Inquisitor, the lead official of the Inquisition "The Grand Inquisitor", a parable related in Fyodor Dostoevsky's novel The Brothers Karamazov