Taron Egerton (Eggsy), Colin Firth (Harry Hart), Julianne Moore (Poppy), Mark Strong (Merlin), Hanna Alström (Princess Tilde), Halle Berry (Ginger), Pedro Pascal (Whiskey) more..., Channing Tatum (Tequila), Edward Holcroft (Charlie), Jeff Bridges (Champ), Emily Watson (Chief of Staff Fox), Sophie Cookson (Roxy), Michael Gambon (Arthur), Elton John (Elton John), Bruce Greenwood (President of the United States), Thomas Turgoose (Liam), Calvin Demba (Brandon), Tobi Bakare (Jamal), Gordon Alexander (Kingsman Cab Driver), Keith Allen (Charles), Tom Benedict Knight (Angel), Björn Granath (The King of Sweden), Lena Endre (The Queen of Sweden), Samantha Coughlan (Tour Guide), Martyn Ford (Glastonbury Guard), Poppy Delevingne (Clara), Grant Gillespie (Hotel Receptionist), Tara Hugo (Kentucky Barmaid), Nicholas Colicos (Very Drunk Redneck), Jordan Mifsud (Patient One), Kaye Brown (Patient Two), Paul Giddings (Patient Three), Iain McKee (Poppy's Antidote Doctor), Mark Arnold (General McCoy), Shannon Bream (FOX News Anchor), James Carroll Jordan (Harvard Professor), Bill Hemmer (FOX News Anchor), Stacey Swift (Hospital Doctor), Alessandro De Marco (Cable Car Attendant), Antonio Magro (Confused Guard) and others.

Matthew Vaughn (Producer), Matthew Vaughn (Writer), Martin Cantwell (Sound Effects Editor), Angus Bickerton (Visual Effects Supervisor), Rosemary Brandenburg (Set Decoration), Marco Greco (Production Manager), Jane Goldman (Writer) more..., Arianne Phillips (Costume Design), Eddie Hamilton (Editor), Adam Bohling (Producer), Grant Armstrong (Supervising Art Director), Giles Keyte (Still Photographer), Dave Gibbons (Characters), Emmet Cahill (Key Grip), Nick Wall (Still Photographer), Lisa Tomblin (Hair Designer), Mark Millar (Characters), Bradley James Allan (Stunt Coordinator), David Reid (Producer), Darren Gilford (Production Design), Pierre Buffin (Visual Effects Supervisor), Julia Castle (Art Department Coordinator), George Richmond (Director of Photography), Reg Poerscout-Edgerton (Casting), Alex Bailey (Still Photographer), Tim Wooster (Second Unit Director of Photography), David E. Scott (Art Direction), Stephanie Carey (Stunts), Joe Howard (Art Direction), Ty Teiger (Property Master), Tarnia Nicol (Art Direction), Gary Jopling (Art Direction), Nicky Ackland-Snow (Construction Coordinator), Matthew Collinge (Supervising Sound Editor), Dan O'Connell (Foley), John T. Cucci (Foley), Michael Chambers (Gaffer), Matt Davies (Dialogue Editor), James Embree (Stunts), Barrie Hemsley (Visual Effects Producer) and others.