Carrie Underwood
Carrie Underwood is a practicing Evangelical Christian though she attended a Baptist church when she was growing up in rural Oklahoma. She released an album called My Savior, which consists of only Christian songs, many that are based on the hymns she sang at church while growing up.
Tom Cruise
While there are many celebrities that are members of the Church of Scientology, perhaps none are more well known for being affiliated with the church than Tom Cruise. He was introduced to it by his first wife over 30 years ago, and he has since become one of their most prominent advocates.