| Reese Witherspoon | Marlena Rosenbluth |
| Robert Pattinson | Jacob |
| Christoph Waltz | August |
| Paul Schneider | Charlie |
| Jim Norton | Camel |
| Hal Holbrook | Old Jacob Jankowski |
| Mark Povinelli | Kinko / Walter |
| Richard Brake | Grady |
| Stephen Taylor | Wade (as Stephen Monroe Taylor) |
| Ken Foree | Earl |
| Scott MacDonald | Blackie |
| James Frain | Rosie's Caretaker |
| Sam Anderson | Mr. Hyde |
| John Aylward | Mr. Erwin |
| Brad Greenquist | Mr. Robinson |
| Tim Guinee | Diamond Joe |
| Donna W. Scott | Barbara |
| E.E. Bell | Cecil the Barker |
| Kyle Jordan | Russ |
| Aleksandra Kaniak | Mrs. Jankowski |
| Ilia Volok | Mr. Jankowski |
| Bruce Gray | Proctor |
| Jim Jansen | Dean Wilkins |
| James Keane | Chaplain |
| Ivo Nandi | Grocer |
| Karynn Moore | Catherine Hale |
| Andrew Connolly | Weehawken Officer |
| Doug McDougal | Big Top Band Leader |
| Tracy Phillips | Coochie Girl (Nell) |
| Rowan O'Hara | Stampede Girl |
| Tai | Rosie |
| Uggie | Queenie |
| Ice | Silver Star |
| Major | Rex |
| Sita Acevedo | Circus Performer |
| Danny Castle | Circus Performer |
| Michael Coronas | Circus Performer |
| Aloysia Gavre | Circus Performer (as Aloysia Gavré) |
| Chobi Gyorgy | Circus Performer |
| David Hunt | Circus Performer |
| George Landkas-Coronas | Circus Performer |
| Kerren McKeeman | Circus Performer |
| Rebecca Ostroff | Circus Performer |
| Bianca Sapetto | Circus Performer |
| Katia Sereno | Sideshow |
| Vladimir Sizov | Circus Performer |
| Russ Stark | Circus Performer |
| Sebastien Stella | Circus Performer |
| Lee-Anne Telford | Circus Performer |
| Dreya Weber | Circus Performer |
| Tara Ferguson | Showgirl |
| Shannon Freyer | Showgirl |
| Kelsey McNamee | Showgirl |
| Molly O'Neill | Showgirl |
| Mark Barnett | Sideshow |
| Kacie Borrowman | Sideshow |
| Rob Crites | Sideshow |
| Kelly Erickson | Sideshow |
| Derrick Gilday | Sideshow |
| Jonathan Moore | Sideshow |
| Mary Newman | Sideshow |
| Brad Potts | Sideshow |
| Dalmacio Pueblos | Sideshow |
| Larry Gomez | Sideshow (as Gabriel Ramos-Gomez) |
| Jackie Zane | Sideshow |
| Aryiel Hartman | Coochie Girl |
| Michelle LaVon | Coochie Girl |
| Aaron Bloom | Clown |
| Chris Grabher | Clown |
| Eddie Medrano | Clown |
| Stephen Simon | Clown |
| Jon Weiss | Clown |
| Thomas Waymouth | Clown (as Tom Weymouth) |
| Wyatt Biessel | Big Top Band |
| Christopher Blim | Big Top Band (as Chris Blim) |
| Duff Dugan | Big Top Band |
| Marcus Everett | Big Top Band |
| Joe Langer | Big Top Band |
| Glen McDougal | Big Top Band |
| Stefan Rollins | Big Top Band |
| William Morse | Big Top Band (as William Scott Morse) |
| Evan Silverman | Big Top Band |
| Beresford Bennett | Sideshow Band |
| Johnny Britt | Sideshow Band |
| Garnett Brown | Sideshow Band |
| George Harper | Sideshow Band |
| Bobby Haynes | Sideshow Band |
| Todd Cochran | Speakeasy Jazz Band |
| Mike Davis | Speakeasy Jazz Band |
| Keith Fiddmont | Speakeasy Jazz Band |
| Wynton McCurdy | Speakeasy Jazz Band |
| Deryl Patterson | Speakeasy Jazz Band |
| Kabin Thomas | Speakeasy Jazz Band |
| Karl Vincent | Speakeasy Jazz Band |
| Casey | Marlena's Show Horse |
| Navarre | Marlena's Show Horse |
| Willow | Marlena's Show Horse |
| Rascal | Paint Horse |
| Stanley | Giraffe |
| Jack | Buffalo |
| Serena | Tiger |
| Blackie | Yak |
| Baloney | Yak |
| Frankie | Llama |
| Lenny | Llama |
| Ricky | Llama |
| Martin | Llama |
| Widowmaker | Zebra |
| Ace | Zebra |
| Stripes | Zebra |
| Zac | Zebra |
| Bonzai | Hyena |
| Taureg | Lioness |
| Shiva | Lioness |
| Amos | Bear |
| Crystal | Black Leopard |
| Ivory | Black Leopard |
| Athari | Spotted Leopard |
| Sheena | Spotted Leopard |
| Titan | Lion Cub |
| Massai | Lion Cub |
| Pam | Gray Draft Horse |
| Peggy | Gray Draft Horse |
| Andy | Gray Draft Horse |
| Rugby | Wolf |
| Maverick | Wolf |
| Scirocco | Camel (as Scirocco II) |
| Norton | Camel |
| Micah | Camel |
| Forest | Camel |
| Fesnik | Kangaroo |
| Tucker | Kangaroo |
| Pamela Adamic | Foxtrot Dancer (uncredited) |
| Jacob Bertrand | Boy (uncredited) |
| Kimberly Bishop | Rube (uncredited) |
| Max Bogner | Coroner (uncredited) |
| Joseph Booton | Deposit Rube (uncredited) |
| Slav Boston | Rube (uncredited) |
| Rick L. Dean | Rube (uncredited) |
| Tatum Etheridge | Jacob's Daughter (uncredited) |
| Sean Galuszka | Circus Performer (uncredited) |
| Lauren Harper | Speakeasy Patron (uncredited) |
| Christopher Karl Johnson | Foxtrot Dancer in Speakeasy (uncredited) |
| Melissa Johnston | Foxtrot Dancer (uncredited) |
| Sarah Karjian | Speakeasy Socialite (uncredited) |
| Ryan J Kelly | Dancer (uncredited) |
| Kevin Ketcham | Benzini Lead Core Roustabout (uncredited) |
| Tracy Lockridge | Roustabout (uncredited) |
| Lindsay Lucas-Bartlett | Downscale Rube (uncredited) |
| Tommy Lukasewicz | Benzini Core Roustabout (uncredited) |
| Alan Mueting | Smoker at Speakeasy (uncredited) |
| Stephane Nicoli | Rube (uncredited) |
| Fynn O'Hara | Dancer (uncredited) |
| Ashley Palmer | Foxtrot Dancer (uncredited) |
| Ginger Pauley | Cigarette Girl (uncredited) |
| Erin Pickett | Circus Visitor (uncredited) |
| Juli Piechovski | Fox-trotter (uncredited) |
| Barry J. Ratcliffe | Foxtrot Dancer (uncredited) |
| David Rivera | Benzini Roustabout (uncredited) |
| Deborah Rombaut | New York Socialite (uncredited) |
| Chris Rubio | Cornell Friend of Jacob (uncredited) |
| Adrienne Rusk | Speakeasy Socialite (uncredited) |
| Matthew C. Ryan | Benzini Roustabout (uncredited) |
| Matthew Schuster | Rube (uncredited) |
| Zach Silverman | Upper Class Rube (uncredited) |
| Daniel Sobieray | Dancer (uncredited) |
| Sandra Staggs | Dancer (uncredited) |
| Lisa Marie Summerscales | Rube (uncredited) |
| Derek Jon Talsma | Rube (uncredited) |
| George F. Watson | Townie (uncredited) |
| Cody Wood | Rube (uncredited) |
