Jenna Miscavige Hill is an American former Scientologist. After leaving the Church of Scientology in 2005, she has become an outspoken critic of the organization. She had been a third-generation Scientologist, the granddaughter of Ron Miscavige Sr., the daughter of Elizabeth and Ron Miscavige Jr. and the niece of current Scientology leader David Miscavige. Her book Beyond Belief: My Secret Life Inside Scientology and My Harrowing Escape, recounting her experience growing up and living within the Scientology movement, was published by HarperCollins in 2013. She now runs a website which she co-founded with other ex-Scientologists which provides support and discussion for people either in the church or who have left.