Regnum Christi is a brand encompassing the Legionaries of Christ, a religious congregation of Roman Catholic priests and seminarians. They work in collaboration with other Regnum Christi members to form apostles who allow the love of Christ to transform their hearts, families, and the world. Through their communities, the Legionaries of Christ take vows of poverty, chastity, and obedience, undergoing a profound and transformative formation process that spans an average of 14 years.

The mission of the congregation is to form Christian leaders who serve the Church, emulating Christ gathering his apostles. Legionaries bring others to fulfill their baptismal calling, fostering spiritual growth, integral formation, and apostolic outreach. They engage in various pastoral ministries such as spreading the faith, education, evangelizing families and culture, youth work, and promoting justice and charity.

Legionaries impact countless lives through their missionary efforts, inviting people to embark on the adventure of living for Christ and transforming the culture around them. Regnum Christi, through the Legionaries of Christ, actively contributes to building God's Kingdom in society by responding to the needs of the Church and establishing institutions that make a profound and wide-reaching impact