 | Lily Collins als Clary Fray |
 | Jamie Campbell Bower als Jace Wayland |
 | Robert Sheehan als Simon Lewis |
 | Kevin Zegers als Alec Lightwood |
 | Jemima West als Isabelle Lightwood |
 | Lena Headey als Jocelyn Fray |
 | Aidan Turner als Luke Garroway |
 | Jared Harris als Hodge Starkweather |
 | Jonathan Rhys Meyers als Valentine |
 | Kevin Durand als Pangborn |
 | Harry Van Gorkum als Alaric |
 | Godfrey Gao als Magnus Bane |
 | CCH Pounder als Dorothea |
 | Robert Maillet als Blackwell |
 | Stephen R. Hart als Brother Jeremiah |
 | Chad Connell als Lambert |
 | Chris Ratz als Eric |
 | Elyas M'Barek als The Vampire Leader |
 | Pedro Miguel Arce als Bouncer |
 | Matthew Cheng als Magnus' Brother |
 | Carlos Gonzalez-Vio als Vampire Henchman |
 | Melantha Blackthorne als Dumort Vampire (uncredited) |
 | Adam Bogen als Vampire Mercenary (uncredited) |
| Andre Givogue als Vampire (uncredited) |
 | Jonathan Seinen als Raziel (uncredited) |
| Bonnie Siu als Blue Mohawk Girl (uncredited) |
| Gregory Terlecki als Silent Brother (uncredited) |
 | Christopher Maleki als Dark Haired Demon (uncredited) |
| Jerry A. Ziler als Bar Patron (uncredited) |
| I. Marlene King | Screenplay |
| Robert Kulzer | Producer |
| Jessica Postigo | Screenplay |
| Gersha Phillips | Costume Design |
| Geir Hartly Andreassen | Cinematography |
| Don Carmody | Producer |
| Harald Zwart | Director |
| Stephanie Corsalini | Casting |
| Anthony Rizzo | Animation |
| Cassandra Clare | Novel |
| Martin Knoll | Post-Production Manager |
| Charley Medigovich | Casting Associate |
| Kimberley Zaharko | Set Designer |
| Michael Lynne | Executive Producer |
| Hartley Gorenstein | Unit Production Manager |
| J.C. Cuthbert | Art Department Coordinator |
| Anthony Ianni | Art Direction |
| Steve Shewchuk | Set Decoration |
| Tracey Savein | Location Scout |
| Dug Rotstein | Script Supervisor |
| Christopher Singleton | Executive Producer |
| Veslemøy Ruud Zwart | Co-Executive Producer |
| Gregor Hutchison | Post Production Supervisor |
| Clint Bennett | Music Editor |
| Martin Moszkowicz | Executive Producer |
| Jonathan Matthews | Location Manager |
| Hartley Gorenstein | Line Producer |
| Robert Shaye | Executive Producer |
| François Séguin | Production Design |
| Jacqueline Carmody | Editor |
| Christopher Richards | Casting Associate |
| Dylan Sellers | Executive Producer |
| Kevin Banks | Music Editor |
| Karl Crosby | Set Designer |
| Stefan Steen | Production Coordinator |
| Patricia Larman | Set Decoration |
| David Fleming | Additional Music |
| Atli Örvarsson | Original Music Composer |
| Joanne Leach | Stunt Double |
