- Garrett Hedlund Sean Flynn
- Jeff Bridges Kevin Flynn
- Olivia Wilde Quorra
- Beau Garrett Siren Jem
- Michael Sheen Castor
- Brandon Jay McLaren Sobel
- Yaya DaCosta Siren
- James Frain Jarvis
- Bruce Boxleitner Alan Bradley
- Elizabeth Mathis Siren
- Jack McGee Fotógrafo policía