The Marist Brothers of the Schools, commonly known as simply the Marist Brothers, is an international community of Catholic religious institute of brothers. In 1817, Marcellin Champagnat, a Marist priest from France, founded the Marist Brothers with the goal of educating young people, especially those most neglected. While most of the brothers minister in school settings, others work with young people in parishes, religious retreats and spiritual accompaniment, at-risk youth settings, young adult ministry and overseas missions.

A religious brother is a member of a religious institute or religious order who commits himself to following Christ in consecrated life of the Church, usually by the vows of poverty, chastity and obedience. He is usually a layman and usually lives in a religious community and works in a ministry appropriate to his capabilities.