| Tom Holland | Peter Parker / Spider-Man |
| Samuel L. Jackson | Nick Fury |
| Jake Gyllenhaal | Quentin Beck / Mysterio |
| Marisa Tomei | May Parker |
| Jon Favreau | Harold "Happy" Hogan |
| Zendaya | Michelle "MJ" Jones |
| Jacob Batalon | Ned Leeds |
| Tony Revolori | Eugene "Flash" Thompson |
| Angourie Rice | Betty Brant |
| 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 |
| Sebastian 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 |
| Dawn Michelle King | E.D.I.T.H. (voice) |
| Jeroen van Koningsbrugge | Dutch Soccer Hooligan 1 |
| Michael de Roos | Dutch Soccer Hooligan 2 |
| Jan-Paul Buijs | Dutch Soccer Hooligan 3 |
| 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 | Himself |
| Shari Abdul | High School Reporter (uncredited) |
| Maria 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) |
| Blair Barnette | Queens Reporter (uncredited) |
| Tuwaine Barrett | Officer Bristow (extended cut) |
| Anna Benamati | Shop Owner in Venice (uncredited) |
| Pierre Bergman | Venice Fish Seller (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) |
| Gianni Calchetti | Venetian Fish Stall Owner (uncredited) |
| Darren Lee Campbell | Victoria's Crew (uncredited) |
| Hélène Cardona | Austrian Backpacker (uncredited) |
| Dian Cathal | American Reporter (uncredited) |
| Jake Cerny | Airport Traveler (uncredited) |
| Komal Charania | High School Student Boom Operator (uncredited) |
| Daphne Cheung | Passport Clerk (uncredited) |
| Sam Chuck | High School Student (uncredited) |
| Al Clark | Cowboy Plane Passenger (uncredited) |
| Victoria Coburn | Passerby (uncredited) |
| Kimberly Collison | Charity Event Mom (uncredited) |
| Tiziana Coste | Local Venetian (uncredited) |
| Kevin Daigneault | Police Officer (uncredited) |
| Jaylen Davis | Tourist (uncredited) |
| Peter Dawson | Tourist in Venice (uncredited) |
| Kristianne-Kaith Domingo | Passerby (uncredited) |
| Andrew Dunkelberger | Courier (uncredited) |
| Charlie Rhea 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 Holly | Partygoer (uncredited) |
| Ruth Horrocks | 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) |
| Daham Kandanarrachchi | London Passerby (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) |
| Kath Leroy | Czech Traditional Dancer (uncredited) |
| Gavin Lee Lewis | Londoner (uncredited) |
| Faith Logan | High School Student (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) |
| Eustace Meade | Charity Attendant (uncredited) |
| Ben Mendelsohn | Talos (uncredited) |
| Bradley Wj Miller | Passerby (uncredited) |
| Melissa Beth Miller | Tourist (uncredited) |
| Anthony Molinari | Mob Guy (uncredited) |
| Julia Mollin | Flute Player (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) |
| Karen Parks | Charity Event Attendee (uncredited) |
| Hiten Patel | British Station Staff (uncredited) |
| Clay Pel-is | London Tourist (uncredited) |
| Luigi Petrazzuolo | Gondolier (uncredited) |
| Aleksandrs Petukhovs | London Passerby (uncredited) |
| Annie Pisapia | Traveler (uncredited) |
| Martin Polak | Czech Reveler (uncredited) |
| Jivan Xander Ramesh | Pedestrian (uncredited) |
| Mike Ray | Passerby (uncredited) |
| Sofia Renee | High School Student (uncredited) |
| Daniel Rennis | Cab Driver (uncredited) |
| Sawyer Reo | Young Brad Davis (uncredited) |
| Cailan Robinson | Victoria's Crew (uncredited) |
| Emmanuel Rodriguez | Airport Traveler (uncredited) |
| Ray Rosario | TSA Agent (uncredited) |
| Daniel Ryves | Dad Collecting Kids (uncredited) |
| Monae Samone | Midtown High Student (uncredited) |
| Maurice Sardison | Party Goer (uncredited) |
| Susanne Schraps | Berlinerin (uncredited) |
| Karen-J Sear | American Tourist (uncredited) |
| Ilya Tank Shilov | Venice Tourist (uncredited) |
| Davina Sitaram | London Tourist (uncredited) |
| Joakim Skarli | London Tourist (uncredited) |
| Paul Slim | Tourist (uncredited) |
| Richard Stanley | Charity Dinner Attendee (uncredited) |
| Lucas Antoine Starrets | Tourist (uncredited) |
| Faith Tarby | Perfumed Lady (uncredited) |
| Emily Tebbutt | Venice Tourist (uncredited) |
| Oskar Ulvestad | Street Pedestrian (uncredited) |
| Lesdy Vanessa | Tourist (uncredited) |
| Jessica VanOss | Student (uncredited) |
| Joe David Walters | Pawn Shop Owner (uncredited) |
| Jo Wheatley | Armed Security Officer (uncredited) |
| Dale Wilder | German Office Worker (uncredited) |
| Rocco Wu | Peter's Art Classmate (uncredited) |
| Jan Zalabak | Tourist in Town (uncredited) |
| Samantha Mishinski | Student (uncredited) |
| Alessandro Sciarra | Screaming Kid (uncredited) |
| Aristou Meehan | Italian Boy (uncredited) |