John Wick: Chapter 2 is a 2017 American action thriller film directed by Chad Stahelski and written by Derek Kolstad. The film is sequel to John Wick (2014) and the second installment in the John Wick franchise. It stars Keanu Reeves as the eponymous character, alongside Common, Laurence Fishburne, Riccardo Scamarcio, Ruby Rose, Lance Reddick, Peter Stormare, Bridget Moynahan, Franco Nero, John Leguizamo, and Ian McShane. In the film, retired hitman John Wick is forced back into his old life to fulfill a blood oath to crime lord Santino D'Antonio (Scamarcio).

Following the box office success of the previous film, Stahelski and the first film's uncredited co-director David Leitch said a sequel film begun development in February 2015. Later that same month, Jon Feltheimer confirmed plans for additional John Wick properties to create a media franchise, and announced the return of Kolstad as the sequel's screenwriter. Principal photography began in October 2015 and lasted until early that following year, with filming taking place in Montreal, New Jersey, New York City, and Rome.

John Wick: Chapter 2 had its premiere at the Arclight Hollywood in Los Angeles on January 30, 2017, and was released in the United States on February 10, by Lionsgate. The film received generally positive reviews from critics, with praise for the action sequences, direction, editing, visual style, and the performances of the cast (particularly Reeves). It grossed over $174 million worldwide, becoming the then-highest grossing film in the franchise. A sequel, John Wick: Chapter 3 – Parabellum, was released in May 2019.

Plot: John Wick recovers his stolen Boss 429 Mustang from Abram Tarasov, the late Viggo's brother. Wick dispatches Tarasov's men in a violent rampage that heavily damages the Mustang but spares Tarasov under the promise of peace and returns home. Wick has his Mustang taken for repairs by chop-shop owner Aurelio.

John is visited by the Camorra crime boss Santino D'Antonio, who reminds him that he helped John complete his "impossible task," which allowed John to retire and marry Helen. In return, John swore to a "marker," an unbreakable vow symbolized by a "blood oath" medallion. Santino presents the marker to demand services from John, who declines, so Santino retaliates by destroying John's house with a grenade launcher. John survives and travels to the Continental Hotel in New York City, where Winston reminds him that if he rejects the marker, he will violate one of the underworld's two unbreakable rules: no killing on Continental grounds and honoring every marker. John reluctantly accepts his commitment and meets with Santino, who tasks him with assassinating his sister, Gianna, so that he can claim her seat at the "High Table," a council of twelve high-level crime bosses. Santino sends Ares, his mute bodyguard, to observe John's mission.

In Rome, Italy, John infiltrates Gianna's coronation, confronting her in her dressing room. Faced with certain death, Gianna chooses to slit her wrists. As Gianna dies, John shoots her in the head to end her suffering and fulfill the marker. As John leaves, Gianna's bodyguard, Cassian, recognizes him, realizes that he was sent to kill Gianna, and attacks him. John flees to the catacombs, where he is double-crossed by Ares and Santino's henchmen, who intend to tie up "loose ends" by killing him. After killing most of the henchmen, John is again pursued by Cassian. Their fight leads them into the Rome Continental's reception area, where "conducting business" is strictly forbidden, like the New York Continental. As the two share a drink, John explains his reason for killing Gianna. Nevertheless, Cassian promises John a quick and clean death as a sign of professional respect.

Julius arranges safe passage for John back to New York as Santino opens a contract for $7 million to kill John, ostensibly to pretend he is avenging his sister. This leads numerous assassins to unsuccessfully attack John, during which Winston visits Santino to complete the marker, thus freeing John from being unable to move against him. Winston warns Santino that he "stabbed the devil in the back" and that he will be unprepared for John's wrath.

Injured from numerous attempted assassinations, John is then confronted by Cassian in the subway. After a vicious fight culminating in Cassian being stabbed in the aorta, John spares him. The badly injured John seeks help from an underground crime boss known as the Bowery King, whose subordinates treat John's injuries. Intrigued by John's intent to kill a member of the High Table, the Bowery King sportingly gives him a Kimber 1911 pistol with only seven bullets, one for each million of the contract. He directs John to an art museum where Santino holds a gala. John pursues Santino throughout the museum, killing his remaining henchmen, including Ares, who gives Santino enough time to escape to the Continental, where he intends to remain indefinitely in its sanctuary. Despite Winston's warnings, the exasperated John shoots and kills Santino in the Continental lounge.

The next day, Winston meets with John and explains that the Camorra has doubled the contract on John, offering it globally. Further, for "conducting business" on Continental grounds, per the High Table's rules, Winston is forced to declare John "excommunicado," terminating all his access and privileges to underworld resources. However, Winston delays activating John's excommunication by one hour (giving him a head start) and provides him with a marker for future use. Before leaving, John advises Winston to warn every other High Table assassin that he will kill anyone who tries to hunt him. John departs with his dog as Winston makes a call enacting John's "excommunicado" to be activated in one hour. As news of the imminent contract disseminates, cellular phones ring all around, and John begins to run.