15. Joaquin Phoenix
American actor and producer is probably best-known for his role in Ridley Scott’s Gladiator where he portrayed the main antagonist Commodus (Emperor Marcus Aurelius Commodus Antoninus Augustus). While his character had a habit of portraying himself as a demigod (thus being a theist – polytheist at that), Joaquin Phoenix is definitely an atheist. On questions about his religious views, he has had this to say: “I don’t believe in God. I don’t believe in the afterlife. I don’t believe in the soul. I don’t believe in anything. I think it’s totally right for people to have their own beliefs if it makes them happy, but for me, it’s a pretty preposterous idea.” Could he have been any more clearer?