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John Stewart is one of the principal superheroes known as Green Lantern appearing in American comic books published by DC Comics. The character was created by Dennis O'Neil and Neal Adams, and first appeared in Green Lantern (Volume 2) #87 (December 1971/January 1972). Stewart's original design was based on actor Sidney Poitier and he was one of the first African-American superheroes to appear in DC Comics.
Today John Stewart is one of the most popular and high-profile black characters in American comic books. Although a starring character in Green Lantern comics since the 1970s, he had a relatively low profile in mainstream popular culture until his adaptation for the 2000s animated series Justice League and Justice League Unlimited, voiced by Phil LaMarr. This led to an increase in the character's profile in comics, including a starring role in Justice League comics, and a massive expansion in the character's availability in DC Comics toys and merchandise. Wayne T. Carr was cast as John Stewart in the DC Extended Universe (DCEU) director's cut Zack Snyder's Justice League (2021) but his role was ultimately cut from the film. Aaron Pierre will portray the character in the DC Universe, beginning with the TV series Lanterns (2026).