- The entire movie is one big love letter to the earlier James Bond films.
- Saville Row is where Bond said he got fitted for his gun in Dr. No.
- The way Eggsy orders his martini in Valentine's base (presumably Harry's 'proper way' as mentioned earlier) is almost exactly the opposite of the way Bond takes his — gin instead of vodka, stirred instead of shaken, no vermouth.
- The Reagan-era yellow missile pack looks like something straight out of Moonraker. The scene in which it's used even invokes a similar scene from that movie.
- The teaser posters were homages to the iconic For Your Eyes Only Between My Legs image, only the legs being Gazelle's blade prothesis.
- Hart works as a tailor to cover for his real job. Colin Firth's character was the "Tailor" in Tinker, Tailor, Soldier, Spy.
- Hart wields an umbrella as a weapon and as we know no gentleman should be without his umbrella.
- Eggsy names his puppy JB after Jack Bauer.
- The glasses all the Kingsmen wear are a reference to the Harry Palmer Movies (The Ipcress File, et al.) starring Michael Caine.
- Eggsy jokingly calls Merlin "Mycroft" at one point, referring to Sherlock Holmes' brother. Mark Strong appeared as Lord Blackwood in the first RDJ Sherlock Holmes film. Funnily enough, one particular incarnation also carries around an umbrella.
- The Man from U.N.C.L.E. has its characters enter through a tailor's shop, too. Plus, they were known to use tranquilizer darts.
- Valentine likes the #2 with Mac Sauce from McDonald's.
- Get Smart is referenced when Harry mentions the Kingmen's shoes once had phones in the heel.
- Dr. Strangelove even gets a nod as the exploding heads sequence includes a scene inside a modernized version of the movie's classic War Room.
- The scene of Eggsy's mother hacking through the bathroom door with a meat cleaver to get at her young daughter while under an influence that makes her insane with rage is a Shout-Out to Stanley Kubrick's The Shining.
- The Kingsmen wield bulletproof umbrella-shotguns similar to Black Lagoon.
- Valentine's plot to take the elites to the poles and unleash a Hate Plague is almost the exact same plot as the villains of Deus Ex: Human Revolution.
- A group of insane environmentalists engineer a means to wipe out humanity before humanity can destroy the world while their chosen few sit out the apocalypse in a bunker, who can only be stopped by an elite, secret organization based in England? Sounds an awful lot like the novel Rainbow Six by Tom Clancy.
- Or Tomb Raider: Cradle of Life, or Moonraker, or. . . hell, pick a Bond-esque villain, any Bond-esque villain.
- One of the books in the Tom Clancy's Net Force series also contains an atmospheric superweapon that uses ELF frequencies to drive people mad across a wide area.
- The airplane rising out of the front field of the training house looks suspiciously like the X-Men's jet and the Mutant Academy.
- Though at the beginning of the film Eggsy hadn't heard of Trading Places, when Merlin says, "Looking good, Eggsy", he comes right back with "Feeling good, Merlin." (Perhaps he watched the DVD?)
- Gazelle the villain is a literal shout-out to Blade Runner.
Shout Out / Kingsman: The Secret Service