The Authority is a superhero comic book series published by DC Comics under the Wildstorm imprint. It was created in 1999 by Warren Ellis and Bryan Hitch, and follows the adventures of the Authority, a superhero team mainly composed of Ellis-created characters from Stormwatch.

The team appear in various media set in the DC Universe (DCU) media franchise. Angela Spica / Engineer appears in the film Superman (2025) portrayed by María Gabriela de Faría, while the team will additionally headline a self-titled film in development.

In 1999, Warren Ellis and Bryan Hitch created the Authority, a team of superheroes who got the job done by any means necessary. The original line-up consisted of Jenny Sparks, a British woman who could generate and turn into electricity; Jack Hawksmoor, who was psychically bonded to cities in order to communicate with them and receive powers from them; Swift, a Tibetan woman who possessed wings and sharp talons; Apollo, a bio-engineered Superman pastiche; Midnighter, a bio-engineered Batman pastiche who possessed the ability to foresee his opponents' moves in combat; The Engineer, a scientist who had replaced her blood with nine pints of nanotechnology and could create solid objects with it; and The Doctor, a Dutch drug addict and shaman who possessed the combined powers of the hundreds of shamans who came before him. On the creation of the series, Ellis noted:

"One of the reasons I turned their Stormwatch into The Authority is that I found out that, despite the fact that no-one was buying Stormwatch, they kept it going because they liked reading it in the [Wildstorm] office and wanted to keep me employed. And I felt so bloody awful about that, and at the same time had been so struck by Bryan Hitch’s Stormwatch issues, that the train of thought that led to The Authority began."

The Ellis/Hitch run of The Authority lasted 12 issues, divided into three four-issue story arcs: The Circle, Shiftships, and Outer Dark. Outer Dark ended with team leader Jenny Sparks, thought to be the Spirit of the 20th Century, dying in the final minutes of December 31, 1999, as the 20th Century ended and the 21st began.

Replacing Ellis and Hitch after issue #12 were writer Mark Millar and artist Frank Quitely. Tom Peyer and Dustin Nguyen worked on a four-issue fill-in arc, and Arthur Adams drew two of the final three issues of Millar's run and Gary Erskine drew the final issue, #29.

During the Millar/Quitely run, the Authority was now under Jack Hawksmoor's leadership following Jenny Sparks' death at the end of the 20th century. They faced multiple foes such as a mad scientist and his army of superhumans who wanted to influence the 21st Century through Jenny Sparks' successor Jenny Quantum, a previous Doctor who manipulated the Earth itself, and a duplicate team of superheroes modeled on the Authority that was created and backed by the G7 group of nations. Also during the run, Jenny Quantum was adopted by Apollo and Midnighter after they were married and the Doctor worked through his heroin addiction after faltering in battle.

A number of panels and covers during the Millar/Quitely run, which was published in the aftermath of the September 11 attacks, were censored by DC Comics. During Millar and Quitely's first arc, red filters were used to obscure particularly violent panels. DC also ordered a scene in which Apollo and Midnighter kiss be completely removed, and a character based on Marvel Comics' Captain America be redesigned, subsequently re-drawn and recolored on the cover to issue #14 to differentiate between the two. DC would order Adams' work on the final issues of the volume be substantially re-drawn, the more significant examples being a scene depicting leader of the G7 Authority, The Colonel, about to perform a sexual act on Jenny Sparks' severely-decomposed corpse that was re-drawn and Millar's dialogue was re-written to remove any depiction or mention of necrophilia; a panel in which G7 Authority member Teuton kills multiple people by flying through them, that was re-drawn as two separate and less graphic panels; multiple panels in which Teuton gropes Apollo against his will and is then killed in a particularly gory fashion, which were re-drawn so as not to show the groping and to make Teuton's death scene less explicit; a series of panels depicting Swift being humiliated, which had sexual overtones, and was re-drawn so as to soften the scene; and a panel in which George W. Bush was depicted that was re-drawn so the character who appears as the President of the United States would not resemble Bush.