The Congregation of Saint Michael the Archangel (CSMA), in Latin Congregatio Sancti Michaëlis Archangeli and also known as the Michaelite Fathers, is a religious order of the Roman Catholic Church founded in 1897 by the Blessed Father Bronislaw Markiewicz, a Polish priest from Miejsce Piastowe, Poland.

The Congregation of Saint Michael the Archangel is one of the 23 officially recognised groups of the Salesian Family of Don Bosco.
The Congregation now operates in a number of places and parishes around the world. According to the survey in 2010 they work in 52 houses and have nearly 400 members.

They run orphanages, schools and youth centres and work with unprivileged, handicapped, abandoned and poor children including missionary work in 15 countries such as Poland, Argentina, Paraguay, Italy, Germany, Belarus, Papua New Guinea, Australia, Austria and Canada, Aruba, Ukraine, the Dominican Republic, Porto Rico.
Michalites Fathers spread the devotion to Saint Michael and the Holy Angels. They are the guardians of the shrine of Saint Michael the Archangel in Monte Sant’Angelo in Italy. The priests and brothers also run a publishing house so- called “Michalineum” and publish a bi-monthly magazine on St Michael and” the Angels” in Polish and in English.