| Leonardo DiCaprio | .... | Jordan Belfort |
| Jonah Hill | .... | Donnie Azoff |
| Margot Robbie | .... | Naomi Lapaglia |
| Matthew McConaughey | .... | Mark Hanna |
| Kyle Chandler | .... | Agent Patrick Denham |
| Rob Reiner | .... | Max Belfort |
| Jon Bernthal | .... | Brad |
| Jon Favreau | .... | Manny Riskin |
| Jean Dujardin | .... | Jean Jacques Saurel |
| Joanna Lumley | .... | Aunt Emma |
| Cristin Milioti | .... | Teresa Petrillo |
| Christine Ebersole | .... | Leah Belfort |
| Shea Whigham | .... | Captain Ted Beecham |
| Katarina Cas | .... | Chantalle |
| P.J. Byrne | .... | Nicky Koskoff ("Rugrat") |
| Kenneth Choi | .... | Chester Ming |
| Brian Sacca | .... | Robbie Feinberg ("Pinhead") |
| Henry Zebrowski | .... | Alden Kupferberg ("Sea Otter") |
| Ethan Suplee | .... | Toby Welch |
| Barry Rothbart | .... | Peter DeBlasio |
| Jake Hoffman | .... | Steve Madden |
| Mackenzie Meehan | .... | Hildy Azoff |
| Bo Dietl | .... | Himself |
| Jon Spinogatti | .... | Nicholas the Butler |
| Aya Cash | .... | Janet (Jordan's Assistant) |
| Rizwan Manji | .... | Kalil |
| Stephanie Kurtzuba | .... | Kimmie Belzer |
| J.C. Mackenzie | .... | Lucas Solomon |
| Ashlie Atkinson | .... | Rochelle Applebaum |
| Thomas Middleditch | .... | Stratton Broker in a Bowtie |
| Stephen Kunken | .... | Jerry Fogel |
| Edward Herrmann | .... | Voice of Stratton Oakmont Commercial (voice) |
| Jordan Belfort | .... | Auckland Straight Line Host |
| Ted Griffin | .... | Agent Hughes |
| Fran Lebowitz | .... | Honorary Samantha Stogel |
| Robert Clohessy | .... | Nolan Drager (Jordan's Lawyer) |
| Natasha Newman-Thomas | .... | Danielle Harrison |
| Sandra Nelson | .... | Aliyah Farran (Forbes Reporter) |
| Johnnie Mae | .... | Violet (Housekeeper) |
| Christina Jeffs | .... | Venice (Dominatrix) |
| Sabina Maschi | .... | Swiss Flight Attendant #1 |
| Zana Markelson | .... | Swiss Flight Attendant #2 |
| Welker White | .... | Waitress |
| Danny Flaherty | .... | Zip (Lude Buying Teenager #1) |
| Carla Corvo | .... | Pam |
| Dustin Kerns | .... | Ben Jenner |
| Ashley Blankenship | .... | Sales Assistant #1 (in Men's Room) |
| Madison McKinley Garton | .... | Heidi |
| Dierdre Reimold | .... | Nicole |
| Kerry Malloy | .... | Helicopter Pilot |
| Frank Van Putten | .... | Swiss Banker |
| Aaron Lazar | .... | Blair Hollingsworth |
| Steve Routman | .... | SEC Attorney #1 |
| Steve Witting | .... | SEC Attorney #2 |
| Charley Morgan | .... | SEC Attorney #3 |
| Michael Nathanson | .... | Barry Kleinman |
| Natalie Bensel | .... | Bottoms Up Hooker |
| Tess Gillis | .... | Blue Chip Hooker |
| Jaclyn M. Keys | .... | Nasdaq Hooker |
| Krista Ashworth | .... | Pink Sheet Hooker |
| Kathleen Fellegara | .... | Straight Line Testimonial #1 |
| John Bernard Martin | .... | Straight Line Testimonial #2 |
| Jamel Daniels | .... | Straight Line Testimonial #3 |
| Dan Bittner | .... | Rothschild Broker #1 |
| John Behlmann | .... | Rothschild Broker #2 |
| Ward Horton | .... | Rothschild Broker #3 |
| Bret Shuford | .... | Rothschild Broker #4 |
| Paul Monte Jr. | .... | Rothschild Broker #5 |
| Ellen Sexton | .... | Rothschild Broker #6 |
| Brian Tweedy | .... | Rothschild Broker #7 |
| J.T. O'Connor | .... | Rothschild Broker #8 |
| Steven Boyer | .... | Investor's Center Broker #1 |
| Danny A. Abeckaser | .... | Investor's Center Broker #2 |
| Tracy A. Friedman | .... | Investor's Center Broker #3 |
| Matthew Rauch | .... | Stratton Broker #1 |
| Michael Izquierdo | .... | Stratton Broker #2 |
| Donnie Keshawarz | .... | Stratton Broker #3 |
| Johnathan Tchaikovsky | .... | Stratton Broker #4 |
| Aaron Glaser | .... | Stratton Broker #5 |
| Ben Rameaka | .... | Stratton Broker #6 |
| Ben Loving | .... | Stratton Broker #7 |
| Brian Charles Johnson | .... | Young Broker |
| Sebastian Tillinger | .... | Another Broker |
| Chris Riggi | .... | Party Broker #1 |
| Dan Hunter | .... | Party Broker #2 |
| Meghan Rafferty | .... | Donnie's Assistant |
| José Ramón Rosario | .... | Maître d' Hector |
| Davram Stiefler | .... | Broker in Men's Room |
| Dan Daily | .... | Honorary Raymond Samitz |
| Ben Van Bergen | .... | Swiss Customs Officer #1 |
| Matte Osian | .... | Swiss Customs Officer #2 |
| Michael Devine | .... | Cop #1 |
| Jason Furlani | .... | Cop #2 |
| Scott Nicholson | .... | Police Officer #1 |
| Jeremy Bobb | .... | Police Officer #2 |
| Dean Auer | .... | Brookville Police Officer #1 |
| Tom Greer | .... | Brookville Police Officer #2 |
| Sharon Jones | .... | Wedding Singer #1 |
| Starr Duncan | .... | Wedding Singer #2 |
| Saundra Williams | .... | Wedding Singer #3 |
| Emily Tremaine | .... | Cristy |
| Zineb Oukach | .... | Hostess on The Naomi |
| Loretta O. Booz | .... | Wendy |
| Shea Coleman | .... | Skylar Belfort (14 Months Old) |
| Giselle Eisenberg | .... | Skylar Belfort (4 Years Old) |
| Deema Aitken | .... | Lude Buying Teenager #2 |
| Ashley Springer | .... | Job Applicant #1 |
| Justin Anthony Long | .... | Job Applicant #2 |
| Gregory Perri | .... | Job Applicant #3 |
| Viki Boyle | .... | Wedding Minister |
| Chris Caldovino | .... | Rocco #1 |
| Marcos Gonzalez | .... | Rocco #2 |
| Chris Matesevac | .... | Break Dancing Broker #1 |
| Justin Yllanes | .... | Break Dancing Broker #2 |
| Remy Bennett | .... | Abby |
| Catherine Curtin | .... | FBI Agent #1 |
| Paul Urcioli | .... | FBI Agent #2 |
| Jamie O'Connell | .... | FBI Agent #3 |
| Michael O'Hara | .... | Prison Guard |
| Lawrence Lau | .... | Inmate Playing Tennis #1 |
| Michael Bryan French | .... | Inmate Playing Tennis #2 |
| Tess Gillis | .... | Sales Assistant #2 |
| Adria Baratta | .... | Sales Assistant #3 |
| Armen Garo | .... | Rao's Patron #1 |
| Garry Pastore | .... | Rao's Patron #2 |
| Louis Vanaria | .... | Rao's Patron #3 |
| Lawrence Smith | .... | Extra Broker #1 |
| Hardy Winburn | .... | Extra Broker #2 |
| Allyson Carr | .... | Stripper on Yacht |
| Peter Youngblood Hills | .... | Audience Member #1 |
| Daniel Hepner | .... | Audience Member #2 |
| Brendan Griffin | .... | Audience Member #3 |
| Derek Milman | .... | Audience Member #4 |
| Victor Verhaeghe | .... | Audience Member #5 |
| Jared Houseman | .... | Audience Member #6 |