Ricky Gervais as Dominic Badguy

Ty Burrell as Jean Pierre Napoleon

Tina Fey as Nadya

Steve Whitmire as Kermit the Frog / Foo-Foo / Statler / Beaker / Lips / Rizzo the Rat / Link Hogthrob / The Newsman (voice)

Eric Jacobson as Miss Piggy / Fozzie Bear / Animal / Sam Eagle (voice)

Dave Goelz as The Great Gonzo, Dr. Bunsen Honeydew, Zoot, Beauregard, Waldorf

Bill Barretta as Pepe the King Prawn / Rowlf the Dog / Dr. Teeth / The Swedish Chef / Bobo the Bear / Big Mean Carl / Baby Boss / Carlo Flamingo / Leprechaun Security Guard (voice)

David Rudman as Scooter / Janice / Miss Poogy / Bobby Benson / Wayne (voice)

Matt Vogel as Constantine / Floyd Pepper / Sweetums / Pops / Robin / Lew Zealand / Crazy Harry / 80's Robot / Camilla / Uncle Deadly (voice)

Peter Linz as Walter / Manolo Flamingo (voice)

Tony Bennett as Tony Bennett

Hugh Bonneville as Irish Journalist

Tom Hiddleston as The Great Escapo

Ross Lynch as Young Florist

Salma Hayek Pinault as Salma Hayek

Ray Liotta as Big Papa

James Pasierbowicz as Joe

Richard Herdman as Commuter

Luke Howard as Spanish Train Porter

Pete Meads as German Audience Member

Ricky Rajpal as Audience Member

Danny Trejo as Danny Trejo

Stanley Tucci as Ivan the Guard

Jemaine Clement as Prison King

Zach Galifianakis as Hobo Joe

Tom Hollander as Theater Manager

Toby Jones as Prado Museum Guard #2

Frank Langella as Beefeater Vicar

James McAvoy as UPS Guy

Chloë Grace Moretz as Newspaper Girl

Miranda Richardson as Berliner at Window

Saoirse Ronan as Ballet Dancer

Til Schweiger as German Cop

Russell Tovey as Delivery Man

Christoph Waltz as Christoph Waltz

Mackenzie Crook as Prado Museum Guard #1

Andrés Cantor as Announcer

Sean Combs as Sean Combs

Rob Corddry as First AD

Lady Gaga as Self

Josh Groban as Maximum Security Prisoner

Aleksandar Mikic as Other Guard

Kenneth Collard as Berliner #1

William Brand as Berliner #2

Fleur Poad as Berliner #3

Dylan Postl as Prisoner One

Usher as The Usher

Louise Gold as Annie Sue / UK Muppet Performer (voice)

Nigel Plaskitt as UK Muppet Performer (voice)

Mak Wilson as UK Muppet Performer (voice)

Warrick Brownlow-Pike as UK Muppet Performer (voice)

David Covarrubias as UK Muppet Performer (voice)

Don Austen as UK Additional Muppet Performer (voice)

William Banyard as UK Additional Muppet Performer (voice)

Daisy Beattie as UK Additional Muppet Performer (voice)

Sue Beattie as UK Additional Muppet Performer (voice)

Lynn Robertson Bruce as UK Additional Muppet Performer (voice)

Brian Michael Jones as LA Muppet Performer (voice)

Céline Dion as Piggy Fairy Godmother

Lee Nicholas Harris as Fruit & Vegetable Stall Holder

Vander McLeod as Gulag Captain

James Murray as LA Muppet Performer (voice)

Mike Quinn as LA Muppet Performer (voice)

Dave Chapman as UK Additional Muppet Performer (voice)

Pamela Betsy Cooper as German Lady in the Audience (uncredited)

Dexter Fletcher as (uncredited)

Peter Serafinowicz as Gulag Guard (uncredited)

Jim Henson as Kermit The Frog (archival recordings) (uncredited)

Jerry Nelson as Announcer (voice) (uncredited)

Katie Derry as Showgirl (uncredited)

Grant White as Fan (uncredited)

John Scott as Prison Guard (Uncredited)

Andrew Lyon as Crowd Member at 23:15 (Uncredited)

Faith Elizabeth as German Audience Member (uncredited)

Sam Creed as German Stage Manager (uncredited)

Debby Ryan as Wedding Guest (uncredited)

Bridgit Mendler as Wedding Guest (uncredited)

Tyrel Jackson Williams as Wedding Guest (uncredited)

Jake Short as Wedding Guest (uncredited)

Jon Wennington as Police Officer (uncredited)

Avinashi Sharma as Wedding Guest