John Loftus

John W. Loftus is an American author who writes about his conversion from Christianity to atheism.

During his almost twenty years as an evangelical Christian and Christian apologist, he experienced growing doubt about the tenets of the Christian faith. In the late 1990s, he experienced a crisis of faith that led him to reject Christianity altogether. He eventually wrote a book laying out his case against Christianity that he published in 2008 as Why I Became an Atheist: A Former Preacher Rejects Christianity. Later that same year, he self-published a companion book entitled Why I Became an Atheist: Personal Reflections and Additional Arguments.

His book The Outsider Test for Faith proposes a method for evaluating religious belief from an outsider's perspective.

He also edited the anthology The Christian Delusion: Why Faith Fails, (Amherst, NY Prometheus Books 2010) ISBN 978-1-61614-168-4 and The End of Christianity (Amherst, NY Prometheus Books 2011) ISBN 978-1-61614-413-5. In 2012 he collaborated with Randal Rauser on a book entitled God or Godless.

He founded the website Debunking Christianity, before which he was a contributor to Freethought Blogs, which he left due to differences of opinion.