As half of the magic act Penn and Teller, Penn Jillette enjoys challenging his audiences with the unconventional. In stating his personal credo, Jillette finds liberation in believing there is no God.

"I believe that there is no God. I’m beyond atheism. Atheism is not believing in God. Not believing in God is easy — you can’t prove a negative, so there’s no work to do. You can’t prove that there isn’t an elephant inside the trunk of my car. You sure? How about now? Maybe he was just hiding before. Check again. Did I mention that my personal heartfelt definition of the word “elephant” includes mystery, order, goodness, love and a spare tire?"

- Penn Jillette, 2005, from This I Believe

When the ‘Harry Potter’ novels were first released, they were attacked worldwide by Christian groups for the usage of magic and the glorification of witchcraft. Perhaps the only person they should have been skeptical about is Daniel Radcliffe. The English actor has gone on record stating that he is an atheist but not one who “preaches” his atheism. - from Celebalerts.com

Kathy put the religious world on blast when she won her Emmy in 2007. At the podium to accept her award she quickly called out how many people thank Jesus for their success. She said, instead, “I want you to know that no one had less to do with this award than Jesus. Suck it, Jesus. This award is my god now.” - from Celebalerts.com

James Cameron is a God in his own mind or, that is to say, he knows to thank himself for his own success. The billionaire producer and director of such classics as ‘Avatar’ and ‘Titanic’ isn’t shy about his view on world religion. Cameron says that he is a firm atheist because “agnosticism is just cowardly atheism.” - from Celebalerts.com

First he was the face of overbearing middle-management with his turn in ‘The Office’ and now he is the voice of atheism, behind only Richard Dawkins. Many people know Gervais for his scathing tweets directed at the more popular faiths in the world. While this is sure to rub folks the wrong way, it is refreshing to see a celeb speak their mind. - from Celebalerts.com

Anyone who has ever turned on an episode of ‘Family Guy’ will be quick to admit that the razor witted cartoon has an axe to grind against religion. It is no surprise that the series creator, Seth, is a militant atheist. Seth calls his views on athiest, “Like the civil rights movement.” Seth believes that more people should be committed to the pursuit of knowledge over faith. - from Celebalerts.com

Kiera is a Brit, a hottie, and a cynical atheist. The ‘Pirates of the Caribbean’ star claims that religion is just a way to ‘get away with anything’. Knightley believes that religion is used as a crutch to do bad things and then ask for forgiveness. - from Celebalerts.com

In 2011 the quirky movie star confirmed that he was an atheist. He did, however, say that he was fine with his wife raising his son in the Jewish faith. When asked if he would ever confront his son about atheism and religion Giamatti said, “When the time is right.” - from Celebalerts.com

As one of the most popular ‘out of the closet’ actors to ever live, Ian has a vested interest in fighting off certain religious notions. The ‘Lord of the Rings’ star has been a vocal gay rights advocate for the vast majority of his storied career and this is derived, in part, from his atheist views. - from Celebalerts.com

Founder of Virgin Group and one of the richest men in the world, Branson has no faith in the existence of God. The entrepreneur says that he would “love to believe” because he finds that belief “comforting.” For the man who has everything, it seems like religion is something he does not want. - from Celebalerts.com

If atheists believed in a God, He would be Richard Dawkins. Dawkins is known (and loved, and hated) for his bestselling book, ‘The God Delusion’. In the book he pointed out how the world at large is ‘atheist about most of the Gods that exist’ and that true atheists just ‘go one god further’. Dawkins routinely speaks out and advocates for atheism and scientific progress. - from Celebalerts.com

Over the span of her 60 year career, including her 4 Academy Award wins, Hepburn was a frequent advocate of atheism. She preferred to believe in the goodness of people and the acts of kindness that keep the world going. She died at 96 after having lived a very full and poignant life. - from Celebalerts.com

For fans of this cynical authors work, his atheism would not surprise them in the least. The author of ‘Slaughterhouse Five’ routinely put humanity under the microscope in his novels and these stories were just an outward showing of his inward beliefs. Vonnegut says that his study of anthropology confirmed his atheism. - from Celebalerts.com

If Dawkins were the God of atheism, Hawking would be Jesus. Stephen Hawking has said, countless times, that no God created the universe. His belief in the ‘Big Bang’ has become the foundation for how the world started from the perspective of atheists. - from Celebalerts.com