Injustice: Gods Among Us is a 2013 fighting game developed by NetherRealm Studios and published by Warner Bros. Interactive Entertainment for the PlayStation 3, Wii U, and Xbox 360. It is the first installment in the Injustice franchise based upon the fictional universe of DC Comics. The storyline is set in a parallel universe within the DC Comics' Multiverse, where Superman has become a tyrant and established a new world order after the Joker tricked him into killing Lois Lane and destroying Metropolis. In an effort to stop this, Batman summons counterparts of the League's members from the main universe to join his insurgency and end the totalitarian regime.

It was released in April 2013 in North America, Europe, and Australia, and June 2013 in Japan. An expanded version of the game, titled Injustice: Gods Among Us – Ultimate Edition, was released in November 2013 for the PlayStation 3, PlayStation 4, PlayStation Vita, Windows, and Xbox 360. A free-to-play mobile app based on Injustice was also released for iOS and Android devices, which was then ported to arcade machines by Raw Thrills in the fall of 2017, months after the sequel's release. A prequel comic book series of the same name, written by Tom Taylor, was released beginning in January 2013.

Players select one of several characters from the DC Universe (consisting of both villains and heroes), to engage in combat, aiming to knock out their opponent. The game is set in a 2.5D environment: while character models and backgrounds are rendered in three-dimensional graphics, the characters are restricted to fight within a two-dimensional space. Injustice builds upon several aspects from NetherRealm Studios' previous title, Mortal Kombat (2011), including its controls, game mechanics, narrative-driven campaign, and online functionality.

The game received positive reviews from critics, who praised its story, gameplay mechanics, and use of the DC Comics license. Injustice became the highest selling game in the United States and United Kingdom during the month of its release. The game also won several awards for "Best Fighting Game" in 2013.

A sequel, Injustice 2, was released in 2017. Injustice, an animated film based on the game, was released in 2021.

Injustice: Gods Among Us is a fighting game in which players control characters with different fighting styles and special attacks, engaging in one-on-one combat to deplete their opponent's life gauge. The game is in 2.5D: movement is restricted to a two-dimensional plane, while the characters and backgrounds are rendered in three-dimensions. Unlike the traditional fighting game design involving multiple rounds with regenerative life bars, Injustice uses a scheme similar to the Killer Instinct series. Each match consists of a single round with each player bearing two life bars. The game utilizes a four-button control layout of light, medium, and heavy attacks, alongside a "character trait" button, which activates a unique ability or attack designed to showcase each character. For instance, Superman's character trait provides a temporary boost in strength, while Batman's character trait summons a swarm of robotic bats.

The stages, based on various locations from the DC Universe, such as the Batcave, Metropolis, and the Fortress of Solitude, feature interactive environments and multiple areas. If an opponent is hit with a heavy attack near a corner of the arena, it launches them, triggering a transition animation and taking the fight to a new section of the stage. Each section also contains objects that characters can interact with differently depending on their class. Characters fall into two classes: "power characters", who rely on brute strength and innate abilities, and "gadget characters", who use weapons, items, and other external mechanisms to win. For example, a gadget character like Batman can attach a bomb to a car to cause an explosion, while a power character like Superman will pick up the same car and smash his opponents with it. Players have the option to turn off interactive elements and stage transitions.

As characters perform special moves, block oncoming attacks, or get hit by the opponent, their "super meters" will gradually fill. Portions of the super meter can be used to execute enhanced special moves or counter enemy moves. With a full meter, players can unleash their strongest special attack. Players may also expend their meter to interrupt a combo and enter a wager battle, dubbed the "clash system", which combines individualized cutscene cinematics with the process of betting meter. A clash may be triggered by a player only after they have lost their first life bar. During the sequence, both players commit portions of their meter in secret, with the highest bidder winning the clash.