The Justice League, also called the Justice League of America or JLA, is a fictional superhero team that appears in comic books published by DC Comics.

First appearing in The Brave and the Bold #28 (1960), the League originally appeared with a line-up that included Superman, Batman, Wonder Woman, Flash (Flash (Barry Allen)), Green Lantern (Hal Jordan), Aquaman and the Martian Manhunter. However, the team roster has been rotated throughout the years with characters such as Green Arrow, Atom (Atom (Ray Palmer)), Hawkman (Hawkman (Katar Hol)), Black Canary, Captain Marvel (Captain Marvel (DC Comics)), Zatanna, Plastic Man, and dozens of others. The team got its own comic book title in October 1960, when the first issue was published, and would continue to number 261 in April 1987, which was the final issue. Throughout the years, various incarnations or subsections of the team have also operated as Justice League America, Justice League Europe, Justice League International, Justice League Task Force (Justice League Task Force (comics)), Justice League Elite, and Extreme Justice.

Various comic book series featuring the League have remained generally popular with fans since inception and in most incarnations, its roster includes DCs most popular characters. The League concept has also been adapted into various other entertainment media, including the classic Saturday morning Super Friends animated series (1973-1986), an unproduced Justice League of America (Justice League of America (TV movie)) live action series, and most recently animated series Justice League (Justice League (TV series)) (2001-2004) and Justice League Unlimited (2004-2006). A live-action film was in the works in 2008 before being shelved.