1. Sonny Bono,
Sonny Bono was said to have been introduced to the Church by Mimi Rogers, former wife of Tom Cruise who is said to have gotten Cruise interested in the first place. The revelation came soon after Cher pointed out his affiliation with the Church in an interview. Bono later revealed he was officially a Roman Catholic though!
So these were some of the most prominent celebrities who left Scientology. Though some of the exits might have gotten a little complicated, we wish them luck with their new-found Scientology-free lives!