Also Known As:
- 9 - A szám hatalma
- I dynami tou enn9a
- Número 9
- John August
- John August
- Ryan Reynolds ... Gary / Gavin / Gabriel
- Melissa McCarthy ... Margaret / Melissa / Mary
- Hope Davis ... Sarah / Susan / Sierra
- Elle Fanning ... Noelle
- David Denman ... Parole Officer / Agitated Man
- Octavia Spencer ... Streetwalker
- Ben Falcone ... Himself
- Dahlia Salem ... Herself
- John Gatins ... Himself
- Andy Fielder ... Moderator
- Jodi Sellards ... Piano Player
- Greg Baine ... Delivery Guy
- Martin Yu ... Focus Group Participant #1
- Gregg Naaman ... Focus Group Participant #2
- Lorene Scafaria ... Game Night Guest
- Jim Rash ... Game Night Guest
- Rawson Marshall Thurber ... Game Night Guest
- Dan Jinks ... Game Night Guest
- Sean Andrews ... Officer Cooper
- Nicholas Garren ... Russian Drug Dealer
- Malia Herrick ... Check-in girl
- Ben Kermode ... Focus group participant #3
- Howard A. Rodman ... Himself
- Ellen Treanor ... Christine Walsh