- Remy Hii - Brad Davis
- Martin Starr - Mr. Harrington
- J.B. Smoove - Mr. Dell
- Jorge Lendeborg Jr. - Jason Ionello
- Cobie Smulders - Maria Hill
- Numan Acar - Dimitri
- Zach Barack - Zach
- Zoha Rahman - Zoha
- Yasmin Mwanza - Yasmin
- Joshua Sinclair-Evans - Josh Spinelli
- Tyler Luke Cunningham - Tyler
- Sebastián Viveros - Sebastian
- Toni Garrn - The Seamstress
- Peter Billingsley - William Ginter Riva
- Clare Dunne - Victoria
- Nicholas Gleaves - Guterman
- Claire Rushbrook - Janice
- J.K. Simmons - J. Jonah Jameson
- Jeroen van Koningsbrugge - Dutch Soccer Hooligan 1
- Michael de Roos - Dutch Soccer Hooligan 2
- Sergio Pierattini - Venetian Glassblower
- Anjana Vasan - Queens Reporter
- Brian Law - Queens Reporter
- Evelyn Mok - Queens Reporter
- Tatiana Lunardon - Italian TV Newsreader
- Giada Benedetti - Italian Customs Office
- Lukáš Bech - Helpful Dutch Man
- Alessandro Giuggioli - Italian Street Vendor
- Petr Opava - Opera Singer
- Giuseppe Andriolo - Caricaturist
- Pat Kiernan - Pat Kiernan
- Shari Abdul - High School Reporter (uncredited)
- Mari Alexandrova - Tourist in Venice (uncredited)
- Kristen Alminta - Police Officer (uncredited)
- Vincent Angel - Midtown High Student (uncredited)
- Peter Arpesella - Airplane Pilot (uncredited)
- Lasco Atkins - Salvation Army guest (uncredited)
- Sitara Attaie - Dutch Lady (uncredited)
- Peter Bankolé - Mob Boss (uncredited)
- Tuwaine Barrett - Officer Bristow (extended cut)
- Anna Benamati - Shop Owner in Venice (uncredited)
- Avondre E.D. Beverley - High School Student (uncredited)
- Bruno Bilotta - Mob Boss (uncredited)
- Sharon Blynn - Soren (uncredited)
- Luigi Boccanfuso - Italian Builder in Venice (uncredited)
- Paolo Braghetto - Poliziotto (uncredited)
- Dante Brattelli - High School Student (uncredited)
- Jeff Bridges - Obadiah Stane (archive footage) (uncredited)
- Graham Burton - London Passerby (uncredited)
- Ken Byrd - Post Office Customer (uncredited)
- Sokol Cahani - Mob Boss (uncredited)
- Darren Lee Campbell - Victoria's Crew (uncredited)
- Hélène Cardona - Austrian Backpacker (uncredited)
- Dian Cathal - American Reporter (uncredited)
- Jake Cerny - Airport Traveler (uncredited)
- Daphne Cheung - Passport Clerk (uncredited)
- Sam Chuck - High School Student (uncredited)
- Victoria Coburn - Passerby (uncredited)
- Kimberly Collison - Charity Event Mom (uncredited)
- Tiziana Coste - Local Venetian (uncredited)
- Jaylen Davis - Tourist (uncredited)
- Kristianne-Kaith Domingo - Passerby (uncredited)
- Andrew Dunkelberger - Courier (uncredited)
- Charlie Esquér - Mexican Survivor (uncredited)
- Ria Fend - Tourist in Venice (uncredited)
- Ferroz Fernandez - Tourist in Venice (uncredited)
- Vincent Frattini - Venice Local (uncredited)
- Massi Furlan - Flight Attendant (uncredited)
- Cynthia Garbutt - Charity Dinner Guest (uncredited)
- Thomas Goodridge - Tourist in Venice (uncredited)
- Sonia Goswami - Tourist (uncredited)
- Nicholle Hembra - Saved Londoner (uncredited)
- Michael Hennessy - Hotel Guest (uncredited)
- Meagan Holder - Pretty Tourist (uncredited)
- Patrick Doran - Partygoer (uncredited)
- Ruth Clarson - Tourist (uncredited)
- Chris Hyacinthe - Sneezy Tour Guide (uncredited)
- Michael Iacono - Airport Kid Traveler (uncredited)
- Roman Ibragimov - Bar Customer (uncredited)
- Theo Ip - Tourist (uncredited)
- Timothy Christian Jansen - High School Student (uncredited)
- Keon Kendrick - Flight Attendant (uncredited)
- Camille Kinloch - Midtown High School Student (uncredited)
- Michal Kubal - Czech TV News Anchor (uncredited)
- Hannah Kurczeski - Student (uncredited)
- Géraldine Lamarre - Traffic Warden (uncredited)
- Jimena Larraguivel - Mexican Villager (uncredited)
- Rich Lawton - Journalist (uncredited)
- Kat Leroy - Czech Traditional Dancer (uncredited)
- Gavin Lee Lewis - Londoner (uncredited)
- Patrick Loh - Airport Passenger (uncredited)
- Joseph Long - Mob Boss (uncredited)
- Marian Lorencik - New Czech Reveler (uncredited)
- Ketan Majmudar - Berlin Commuter (uncredited)
- Tony Mardon - Londoner (uncredited)
- Antonín Mašek - Bellboy (uncredited)
- Ben Mendelsohn - Talos (uncredited)
- Bradley Wj Miller - Passerby (uncredited)
- Melissa Beth Miller - Tourist (uncredited)
- Anthony Molinari - Mob Guy (uncredited)
- Adrian Mozzi - Venice Local (uncredited)
- Brendan Murphy - Police Officer (uncredited)
- Amanda Musso - Carnival Hot Girl (uncredited)
- Emily Ng - Italian Tourist (uncredited)
- Daniel Olson - Czech Guy (uncredited)
- Hiten Patel - British Station Staff (uncredited)
- Luigi Petrazzuolo - Gondolier (uncredited)
- Aleksandrs Petukhovs - London Passerby (uncredited)
- Annie Pisapia - Traveler (uncredited)
- Jivan Xander Ramesh - Pedestrian (uncredited)
- Mike Ray - Passerby (uncredited)
- Sofia Renee - High School Student (uncredited)
- Cailan Robinson - Victoria's Crew (uncredited)
- Emmanuel Rodriguez - Airport Traveler (uncredited)
- Ray Rosario - TSA Agent (uncredited)
- Daniel Ryves - Dad Collecting Kids (uncredited)
- Maurice Sardison - Party Goer (uncredited)
- Karen-J Sear - American Tourist (uncredited)
- Ilya Tank Shilov - Venice Tourist (uncredited)
- Davina Sitaram - London Tourist (uncredited)
- Joakim Skarli - London Tourist (uncredited)
- Lucas Antoine Starrets - Tourist (uncredited)
- Faith Tarby - Perfumed Lady (uncredited)
- Emily Tebbutt - Venice Tourist (uncredited)
- Lesdy Vanessa - Tourist (uncredited)
- Jessica VanOss - Student (uncredited)
- Joe David Walters - Pawn Shop Owner (uncredited)
- Jo Wheatley - Armed Security Officer (uncredited)
- Rocco Wu - Peter's Art Classmate (uncredited)
- Samantha Mishinski - Student (uncredited)
- Aristou Meehan - Italian Boy (uncredited)
- Eric Patrick Cameron - Midtown High Student (uncredited)
- Riley Flanagan
- Deirdre Horgan
- Jon Watts
- Joe Simon
- Jack Kirby
- Steve Ditko
- Olivia Brittain
- Victoria Alonso
- Matt Tolmach
- Jason B. Stamey
- Sarah Halley Finn
- Eliza Heslop
- Karen Vassar Triest
- Andrew Sissons
- Martin Švojger
- Petr Čechák
- Michael Miller
- Michael Giacchino
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