 | Nicole Kidman als Diane Arbus |
 | Robert Downey Jr. als Lionel Sweeney |
 | Ty Burrell als Allan Arbus |
 | Harris Yulin als David Nemerov |
 | Jane Alexander als Gertrude Nemerov |
 | Emmy Clarke als Grace Arbus |
 | Genevieve McCarthy als Sophie Arbus |
 | Boris McGiver als Jack Henry |
 | Marceline Hugot als Tippa Henry |
 | Mary Duffy als Althea |
 | Emily Bergl als Allan's New Assistant |
 | Gwendolyn Bucci als Dominatrix |
 | Christina Rouner als Lois |
 | Matt Servitto als Handsome Client |
| Lynn-Marie Stetson als Fiona |
| Jess Osuna als Elevator Man |
| Steven Shainberg | Director |
| Carter Burwell | Original Music Composer |
| Erin Cressida Wilson | Screenplay |
| Bill Pope | Director of Photography |
| Laura Bickford | Producer |
| Carrie Stewart | Set Decoration |
| Gary Cergol | Art Department Coordinator |
| Mark Bridges | Costume Design |
| Amelia Rasche McCarthy | Casting Associate |
| Ellen Parks | Casting |
| Bonnie Timmermann | Producer |
| Amy Danger | Production Design |
| J.B. Popplewell | Art Department Coordinator |
| Annie Welles | Script Supervisor |
| J.C. Brotherhood | Special Effects Coordinator |
| Wayne Herndon | Hairstylist |
| Todd Kleitsch | Makeup Effects |
| Nick Ralbovsky | Art Direction |
| Kyra Panchenko | Makeup Artist |
| Carter Burwell | Music |
| Richard Hebrank | Construction Coordinator |
| Robert McCann | Hairstylist |
| Keiko Deguchi | Editor |
| Andrew Fierberg | Producer |
| Kristina Boden | Editor |
| Austin Lovell | Construction Coordinator |
| Robert Fama | Key Hair Stylist |
| Kate Biscoe | Makeup Effects |
| Susan Carrano | Assistant Costume Designer |
| Kerry Warn | Hair Designer |
| James Sarzotti | Makeup Artist |
| Shawnna Thibodeau | Stunt Double |
