On February 2, 2016, Paul Feig announced the first full trailer will release at the end of the month. 
On February 13, 2016, Sony Pictures released a 28 second teaser trailer reciting "Who Ya Gonna Call?" amid footage of police and national guard gathering in New York City. The full trailer was stated to be set for release on March 3. 
On March 2, 2016, Paul Feig revealed the trailer will be posted at 6 am PST/9 am EST/1400 GMT. 
On March 2, 2016, Sony and Ghostcorps invited fans to an early screening of the trailer then held a brief Q&A session. Paul Feig talked about how he and Katie Dippold focused on writing the four characters right without an actors in mind. Feig then spent two months figuring out who to cast for the roles and who would compliment each other. He reiterated Melissa McCarthy was never a shoe-in to join the cast then elaborated on his reasoning. Kristen Wiig was a 'kind of vulnerable comedian,' McCarthy was a 'headstrong comedian,' Kate McKinnon was a 'weird nut who just says anything,' and Leslie Jones is a 'powerhouse.'  On the notion of a reboot instead of a sequel, Feig elaborated briefly on what he said before. He didn't want the new team to be handed the technology and be taught how to use them. He wanted to see it developed from the start.  On the kind of ghosts that will appear, Feig admitted there will be many types in the movie but the main ghosts that appear will be 'basically humanoid' in appearance. Part of the reason for that was he wanted actors to interact with actors. He went back to the trailer and as an example, talked about the museum ghost. She was portrayed by Bess Rous and Rous was wearing a LED suit then hoisted around. There also a lot of thought put into how the ghost's aura comes it, how particulates come off a ghost and how much a ghost dissolves while interacting with the real world. 
On March 3, 2016, the trailer was released on the YouTube accounts of both Sony Pictures Entertainment  and The Ellen Show , the latter of which had the world television premiere of the trailer on that day's episode.
On March 3, 2016, Paul Feig and Katie Dippold commented on the trailer.  The intent behind the "30 Years Ago" beginning was be reverent to the original movies, to acknowledge the original movies, and to convey the passing of the torch without marketing it as a direct sequel.  The ecto projectile scene took place in a museum in an old mansion in New York City and the library scene in the first movie inspired it.  Abby Yates has been studying the supernatural her whole life. She never wavered and never cared if others thought she was crazy. Jillian Holtzmann builds the equipment. She doesn't care about social norms so what would freak other people out, doesn't freak her out. Patty Tolan works for the MTA and reads a lot of non-fiction books in her booth so she knows a lot about the city. Patty sees a ghost and joins the Ghostbusters.  Bess Rous portrays the ghost in the museum scene. She wore a LED light suit, and was placed in a rig that took her up and down. For one take, she did this thing where they didn't expect: she just screamed. It scared the shit out of Kristen Wiig and all the others.  In the movie, Holtzmann is constantly coming up with new equipment. Some of it helpful, some of it is not. Some of the inventions that she makes that is just way too dangerous. The 'bear trap' is one of them.  There was some debate about putting Slimer in the trailer or not. Once Feig say special effects for him, Feig decided it was okay to put him in it.  In the script, Holtzmann only put the wig on. During filming, McKinnon put the hat on, too.  Feig hints at an evolution of the logo. Everything has an origin story - the Proton Pack and the logo for example. 
On May 18, 2016, a second domestic trailer was released. 
On June 3, 2016, it was revealed a sneak peek would be including with the release of the original movie on June 12. 
As of June 17, 2016, trailers for Ghostbusters have been attached to selected theatrical screenings of "10 Cloverfield Lane", "Batman v. Superman: Dawn of Justice" and "Finding Dory". The trailer with "Finding Dory" appears to be an amalgamation of TV spots.
On March 8, 2016, a Russian international trailer with new footage was released online but taken down at Sony's request. 
On March 9, 2016, the first international trailer was officially released.  Feig later broke down the trailer.  The helmet worn by Abby is a homage to what the possessed Louis Tully wore. McCarthy wanted an odd piece of equipment to wear when viewers first see her.  The role of Patty was originally written with McCarthy in mind.  Erin will go through the biggest changes in the movie.  Holtzmann is eclectic and inspired by Harpo Marx who just appropriates all this clothing.  Ghosts are the energy of dead people who haven't gone to the other side or dissipated. Feig wanted to explore what happens if they got energised.  Slimer is a fully articulated puppet augmented with special effects.  The band interrupted at the rock concert had songs written for them by the movie's composer Teddy Shapiro. 
On March 14, 2016, the 2:03 Russia trailer was released. It had new footage of Kevin driving Ecto-2 through West 56th Street and 7th Avenue. 
On March 24, 2016, the 50 second Japan trailer was released. 
On May 20, 2016, the second international trailer, 1:54 in length, was posted. 
On June 7, 2016, a 1:05 second Japan trailer was released. 
On April 26, 2016, Entertainment Tonight released a 1:17 featurette on Kevin featuring behind the scenes footage, movie footage, and comments from the cast and crew.  Sony released a similar feature 30 seconds longer.  Sony released a Kevin feature with 30 more seconds of content. 
On June 8, 2016, character vignettes for Abby (1:49 in length), Erin (1:44 in length), Patty (1:42 in length), and Holtzmann (1:14 in length) were released.  A featurette on Ecto-1 was also released 1:52 in length. 
On June 29, 2016, a gadget vignette was released naming the Ghostbusters' equipment. 
On July 6, 2016, a minute long vignette about the funniest people was posted. 
On May 18, 2016, the TV spot version of the second domestic trailer also began airing on cable such as Comedy Central. It was a minute re-cut. 
On May 28, 2016, a new TV spot in the United Kingdom was reported. It showed new footage of how the Trap is activated and spoiled one of the cameos from the original cast. 
On June 14, 2016, four TV spots were released online - one of which, TV Spot #4 "Ain't Afraid," played on television just before the NBA Finals Game 5 tipped off. 
On June 16, 2016 TV spots #5 to #9 were released. 
On June 22, 2016, TV spots #10 to #14 were released.
On June 23, 2016, TV spots #15 to #16 were released. #15 was a Polish version. As of #16, the movie had a rating of PG-13 for "supernatural action and some crude humor."
As of June 25, 2016, the Playstation Store featured all the vignettes.
On June 26, 2016, TV Spot #17 "Throw Down" was released online
On June 27, 2016, TV Spot #18 and #19 were released online. #18 "Apocalypse" included a Chinese narrator. #19 "Army of the Undead" was partly narrated by Rowan.
On June 28, 2016, TV Spot #20 and #21 were released online, again with foreign narrators. A TV Spot titled "Showdown" was released in Germany. 
On June 29, 2016, TV Spot #22 was released.
On June 30, 2016, TV Spot #23, 24, and 25 were released.
On July 3, 2016, TV Spot #26 and #27 were released. 
On July 4, 2016, TV Spot #28, #29, and #30 were released. 
On July 5, 2016, TV Spot #31 to #35 were released. #33 "The Slimers" was pulled hours later and #34 and #35 were renumbered to #33 and #34.
On July 7, 2016, TV Spot #35 and #36 were posted.
On July 8, 2016, TV Spot #37 to #40 were posted. TV Spot #39 was taken down. TV Spots #37, 38, and 40 were renumbered to 36, 37 and 38.
On July 11, 2016, TV Spot #39 and #40 were released.
On July 12, 2016, TV Spot #41 and 42 were released.
On July 13, 2016, TV Spots #43 and 44 were released.
On July 15, 2016, TV Spot #45 was released.
Network TV Spots
On the week of July 11, 2016, several networks began broadcasting exclusive clips.
On July 13, 2016, a promotion from NBC Universal was posted.  The 'Must See' TV spot on NBC-Universal affiliated channels showed brief footage of Bill Murray's cameo.
There was a Spike TV-Papa John's commercial with two Ghostbusters, a man and woman, in 2016 gear taking away a bad karaoke singer's mike after they are summoned with an alarm under a table. Shortly, a Papa John's deliveryman arrives with the limited edition Ghostbusters pizza boxes.
Another spot appeared on E! with Maria Menounos.
Another was seen on Nickelodeon depicting a boy and girl, as Ghostbusters, busting Slimer in a library.
On June 30, 2016, a 45 second clip titled "New Gadgets" was released. 
On July 7, 2016, two more clips were released. One was 55 seconds titled "Let's Go" and the other was 34 seconds titled "Super Battle" 
On July 8, 2016, three clips were released. One was 1:02 titled "Kevin's Logos," the second was 51 seconds and titled "Longest Arms," and the third was 44 seconds and titled "Patty Hearse". 
On July 13, 2016, a 00:54 clip titled "Proton Pack" was released and revolved around Abby testing a Proton Pack for the first time. 
On July 14, 2016, a 1:14 promo clip was released. 
↑The Ghostbusters Interdimensional Crossrip Podcast 201b 14:54-15:50 3/4/16Paul Feig says: "I will say we wrote this, we didn't write it with any actors in mind. We kind of just wanted to get these characters right then it was two months of me going, 'Okay, who are the perfect people for this?' And Melissa was never a shoe-in. Everybody thinks Melissa is a shoe-in. She was not cause was like, 'I got to get four very distinct personalities for this.' And I know so many funny people and you know especially funny women so it was a good two months. If -- if you could see the lists of people, it was crazy, but who compliments each other and so by the time we arrived at this - Kristen is this kind of vulnerable comedian. Melissa is a you know a headstrong comedian. And then you got Kate who is the weird nut who just says anything, where that come from? And then Leslie is this powerhouse that comes at you. And the four mix so well and it was really fun even figuring out what role they were going to play. And so their chemistry is good."
↑The Ghostbusters Interdimensional Crossrip Podcast 201b 18:38-18:56 3/4/16Paul Feig says: "I--I know some people are, 'Why isn't it a sequel instead of a reboot?' I didn't like, personally, them being handed technology -- 'here's how to do this.' I want to see it developed and I love -- I'm a tech-head. So it's cool to see all these Proton Packs in the front. I'm totally geeking out."
↑The Ghostbusters Interdimensional Crossrip Podcast 201b 18:38-18:56 3/4/16Paul Feig says: "Again being such a science nut, I wanted these ghosts to be what I always considered ghosts to be which is...dead. Coming back. And uh, even though we played with that and there are other types of ghosts that we really have fun with -- what comes up, I wanted to keep the main ghosts to be basically humanoid but again you're going to get every kind but especially for the early interactions with the Ghostbusters and the supernatural. It also comes with me wanting to on the set... I don't want my actors acting with tennis balls, you know as they do on these CGI movies and go like... Bess Rous who plays the first ghost who ecto projects all over Kristen, that was her in this LED suit with that dress with these LEDs and on this hoist thing that y'know picked her up and we're playing with a ghost imagery that I don't think has been done before and it's sort of really scientifically based... I mean, the science of ghosts. But just the idea of how the aura's coming off them, the particulates that are coming off and much are the dissolving in the real-- in air and the real world and all that. We play with that a lot but you'll see all types of ghosts and it was important to me to have that real ghost quality to it."
↑The Verge "Analyzing the Ghostbusters trailer with director Paul Feig and writer Katie Dippold" 3/3/16Paul Feig says: "Sony marketing put together a ton of trailers. Really great job, but we kept testing them because I wanted to see what real people think. We can sit around all day and think we know what we want, but [you need to] find out what people want. And if we didn't acknowledge those [original] movies existed, it was very confusing to people --- and I think might have also made us seem a little not reverent to what we owe a great debt to. But it was tough, because we went through a million different wordings. I said it can't play as a sequel, because I can't support that, so what's the way to pass the torch? And Ivan [Reitman, who directed the original], when he saw the trailer, he was really happy about it."
↑The Verge "Analyzing the Ghostbusters trailer with director Paul Feig and writer Katie Dippold" 3/3/16Katie Dippold says: "Melissa's character has been at it her whole life. She's never stopped, she's never wavered. She doesn't care. In today's world, scientists don't believe in ghosts. There are no parapsychology departments anymore in colleges, so we just thought that was interesting. What would that mean today, to form a Ghostbusters unit? So to others, [Melissa's character] looks like the crazy lady, but she's just been dead set at pursuing this. And she's working with Kate McKinnon's character, Holtzmann, who works with her in a lab. She's a mysterious lady that knows a lot of stuff. She builds the equipment and she doesn't care about social norms. If she sees everyone freaking out about something, she would just kind of smile: "Oh, isn’t that fun?" And then Leslie Jones plays Patty, who works at the MTA. She sees a ghost, and so she joins them. Patty knows a lot about the city. She reads a lot of non-fiction books while she's sitting alone in that booth all day, and so she brings a lot of that knowledge."
↑The Verge "Analyzing the Ghostbusters trailer with director Paul Feig and writer Katie Dippold" 3/3/16Paul Feig says: "To be able to get Bess Rous, who was one of my actors in Other Space, I thought that would be great if she was the ghost [in the museum scene]. So we got here in this LED light suit, and put her on this rig that took her up and down. But then she could interact with my cast, and even surprise them. At one point, she did this thing where they didn't expect it: she just screamed. It scared the shit out of Kristen and all the others. It was great."
↑The Verge "Analyzing the Ghostbusters trailer with director Paul Feig and writer Katie Dippold" 3/3/16Paul Feig says: "People are obsessed with Slimer. He's probably the most recognizable thing from Ghostbusters, or the thing that people are most focused on. It’s so funny to me. Even Ivan will say that was just a side character. It wasn't really until the cartoons that it took on a life of its own. But we debated a long time, and I was really against putting him in this trailer in the beginning. Then as I saw the special effects come in — he's actually a puppet, and then we CG'd over him to make him more lifelike --- I thought, "Ah, we can put him in. He looks cool." You don't want to put anything out that you don't think is ready yet, but I thought he looked pretty fun."
↑Empire Online "Ghostbusters - trailer breakdown with Paul Feig" 3/9/16Paul Feig says: "Our costume designer, Jeffrey Kurland's preliminary designs had her in these very out of the ordinary outfits. I liked how eclectic we were making Holtzmann – to me she's almost Harpo Marx, who just appropriates all this clothing. You imagine her room is just this enormous pile of clothes she's found in dumpsters and Goodwill and bought at garage sales. The glasses, I liked the idea of her wearing glasses and Kate liked the idea of having something to play with. When those goggles were brought out that was a home run. She goes through a few different eyewear looks, but that one in the trailer is my favourite look of hers."
↑Empire Online "Ghostbusters - trailer breakdown with Paul Feig" 3/9/16Paul Feig says: "They’re the energy of dead people who haven't gone to the other side or haven't dissipated, so that to me is what would come back if ghosts were getting energised, if there were something happening that could do that. If you believe in that sort of thing, New York must be filled with the spirits of dead people, so that’s what that seemed more realistic for a ghost story."