Resurrection Band, also known as Rez Band or REZ, is one of the most well-known and respected Christian rock bands in the history of Contemporary Christian music. They were based out of the Jesus People USA Christian community in Chicago, Illinois, and most of its members continue to be part of that community to this day.

Led by the husband-and-wife team of Glenn and Wendi Kaiser, the band has been the preeminent example of how to evangelize using Christian rock, but the quality musicianship of Resurrection Band has also been a driving force in the development of the Christian music industry at large. Glenn Kaiser also has an established solo career as a blues musician and is also a well-known speaker on various spiritual issues to youth and adults.