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.
Among the Independent Sacramental Movement, some individuals and Christian denominations also practice esoteric Christianity and non-Christian esotericism, support the ordination of women and LGBT persons, and married clergy.
The term was popularized in 2005 by John Plummer in The Many Paths of the Independent Sacramental Movement, although it was used earlier in 2002 by Richard Smoley in Inner Christianity and perhaps first used in the mid-1970s by a short-lived cooperative organization called the Synod of Independent Sacramental Churches.