Independent sacramental movement

The independent sacramental movement (ISM) refers to a loose collection of individuals and Christian denominations which are not part of the historic sacramental Christian denominations embodying catholicity (such as the Catholic Church, Eastern Orthodox Church, and Anglican churches) and yet continue to practice the historic sacramental rites independently.

The term was used in 2005 by John Plummer, in The Many Paths of the Independent Sacramental Movement, and was used earlier, in 2002, by Richard Smoley in his Inner Christianity.