Cobie Smulders performed all of her own stunts in this movie.

Cobie Smulders spent eight weeks training in various martial arts to prepare for her role in this film.

The shirt Jack Reacher wears in the first diner scene is the same shirt he wears throughout the first Jack Reacher (2012) movie.

The film is based on the eighteenth "Jack Reacher" series novel by source novelist Lee Child. "One Shot," the basis of the first film Jack Reacher (2012), is the ninth book, which means this movie is not necessarily a direct sequel in terms of the book series.

The studio originally considered adapting "61 Hours," the fourteenth novel in the "Jack Reacher" book series, as the second film. However, according to Lee Child, the main challenge was the practical complexity to set a thousand miles of snow in South Dakota to accommodate the winter setting. After seeing a copy of the novel "Never Go Back" (2013) during the book's release, they decided to settle on this book because "the character of Samantha forms a three-hander in audience appeal, i.e. Jack, Susan and Sam who are interested with the pair." Child also added that if there would be a third film, the studio (around 2011) had already decided to use "Bad Luck and Trouble" (2007; Book 11), as "they feel they would be ready for an ensemble piece."

The movie was filmed in and around New Orleans, Louisiana starting in October 2015.

While Jack Reacher (Tom Cruise) is on the run, the APB describes him as a "white male in his forties." Tom Cruise was already in his fifties while making the film.

The scenes set in Washington, D.C. were not filmed there, except for green screen and plate work. In actuality, they were shot in New Orleans, Louisiana.

The opening scene of the diner in which Jack Reacher exposes a small town sheriff who is running a human trafficking ring was inspired by the novel "Worth Dying For", which preceded "Never Go Back" in the chronology of Reacher novels. In the novel, Reacher is passing through a small town in Nebraska when he stumbles upon a sex trafficking ring run by a prominent local family (not the police). After breaking it up, the small town folk ask Reacher where he's going next and he says that he's going to Virginia to see a woman named Susan whom he has only ever spoken with on the phone. 'Susan' is obviously Susan Turner (Cobie Smulders), an Army investigator working out of the DC area (in Virginia) and as seen in the opening minutes of the movie, his interactions with Susan take place over the phone. (Though in the novel "Worth Dying For", she had no involvement, nor did the government, in exposing the ring. That was created for the film.)

While speaking to Jack Reacher on the phone, Susan Turner mentions that she's sitting in his old office. She asks him about a huge dent on top of the desk that was allegedly caused by Jack slamming someone's head onto it. This comes from a conversation the two had over the phone in the novel "61 Hours". During the conversation, Susan asks Jack if the rumor is true that the head he slams belonged to a Colonel Jack didn't like. He denies it.

In the film Jack Reacher quizzically queries Major Susan Turner's age. At the time of release Cobie Smoulders was in fact 34 years old.

The first sequel movie that star Tom Cruise has made outside of the "Mission: Impossible" films, until the 2020 release of Top Gun 2. Another possible exception would be The Color of Money (1986), which is a sequel to The Hustler (1961), although Cruise was not featured in the first movie.

Patrick Heusinger, the Hunter, is ambidextrous, something he discovered while shooting fight scenes with Cruise.

Tom Cruise had worked with Edward Zwick before on The Last Samurai (2003), a film which received four Academy Award nominations.

Beginning in the first week in November 2016, this film crossed the $100 million mark in two weeks at the worldwide box-office.

The diner in the opening scene is located right next door to the gas station that Billy Bob Thornton bought in Monsters Ball. It is located on Airline Hwy. in Laplace, La.

In a little in-joke of dialogue timing, Reacher's somewhat unusual name is spoken for the first time in the film by the Sheriff, read out loud at the very moment that he reaches across the diner counter to examine the military ID that was tossed there.

The film was made and released three years after its source novel "Never Go Back" by Lee Child had been first published in 2013.

A January 14, 2013 article entitled "Tom Cruise's 'Jack Reacher (2012)' Unlikely to Get Sequel" published in show-business trade paper 'The Hollywood Reporter' stated: "The film [Jack Reacher (2012)] has grossed [US] $153 million to date and will have to do strong business in Japan, China and Korea if it is to spawn a new s for Paramount . . . Paramount is facing a dilemma on whether to embark on a sequel to Tom Cruise's Jack Reacher (2012), and sources tell The Hollywood Reporter [THR] that the film must do exceptional business in key Asian territories where it has yet to open in order to justify another installment . . . But sources close to the studio tell THR the movie needs to gross $250 million worldwide for Paramount to consider moving forward with another installment - a challenging goal."

The picture's production was officially announced as being green-lit on August 14, 2015.

Edward Zwick was announced as the movie's director on May 19, 2015.

As of January 15, 2017, the gross is 161 million dollars worldwide.

Tom Cruise drives the 4-door variant of the faux-wood panelled 2-door Plymouth Voyager he drove in War of the Worlds (2005).

Fourth feature film where Tom Cruise has played a character who is first-named "Jack". The previous three movies were, Legend (1985), Oblivion (2013), and Jack Reacher (2012).

A crucial scene takes place at an Internet cafe at "Pennsylvania Avenue and North Street" in Washington, DC. North Street is wholly fictitious.

One of only three Edward Zwick films not edited by his frequent collaborator Steven Rosenblum. The other two are About Last Night (1986) and Leaving Normal (1992).

First movie since Blood Diamond (2006) directed by Edward Zwick, not to be scored by James Newton Howard. The music composer for this film is Henry Jackman.

This was the second movie Tom Cruise filmed in New Orleans or in Louisiana. The first was Interview with the Vampire (1994).

The movie was made and released four years after the first Jack Reacher (2012).

Grossed another 31.5 million dollar start in 42 markets and in 20 of those markets, it earned the number one spot for their opening weekends.

Principal photography was reported as being completed by February 4, 2016.

Edward Zwick arrived in New Orleans, Louisiana several weeks prior to the start of principal photography to check out the location, and continue with pre-production.

It was announced on May 14, 2014, that Tom Cruise would be reprising his role as Jack Reacher.

Paramount thought of changing the title because they were afraid the public would mix it up with Popstar: Never stop never stopping. Finally, they decided to keep it because nobody went to see the Andy Samberg-starring comedy.

Madalyn Horcher (Sgt Leach) Danika Yarosh (Samantha) and Robert Knepper (Gen Harkness) have all starred in episodes of Chicago PD (2014) as Isabel Perez (S05E11) Ellie Olstern (S04E13) and Adrian Gish (S02E13) respectively... Robert Knepper also starred in an episode of Chicago Fire (S03E13) as Gish as part of a OneChicago crossover

Lee Child: source novelist plays a TSA agent who is seemingly ambivalent to the fact that Jack (Tom Cruise) does not really match the stolen ID he is using to board the plane. This is a nod to Child's support of the "controversial" casting of the diminutive 5'7" tall Cruise as Child's 6'5 tall," 250lb weighing, and 50-inch wide-chested character of Jack Reacher. Despite a lot of fan backlash at the casting of Cruise, Lee responded: "Obviously, Cruise doesn't match the physical description of Reacher in the books, but the movie is not going to match the book anyway."

The true name of "The Hunter" is never revealed.

Body count: 12