[Cronos]

The atheist religion believes there is no God, and there's no "probably about it!

that would be Jainism which believes that the amountof matter in the universe is finite and matter cannot be created from nothing, hence there can be no creator God. They do, however believe in demi-Gods and also in ascended beings.

[sirchtruth]

Atheism does not believe in the existence of God or God's. Do you need a Webster's definition? Technicalities asides.

Jainism is a cult/sect which revolted against Hinduism and has more to do with denying a supreme being than an actual God. It also believes in asceticism and immortality.