The Society of Our Lady of the Most Holy Trinity (SOLT) is a Society Of Apostolic Life comprised of Priests, Brothers, Deacons, Sisters, and Laity. Our primary Apostolate is to serve the areas of deepest apostolic need. We serve in missions across the world in the following specific areas of apostolate: parishes, migrants and refugees, education, catechetics, evangelization, ecumenism, healing, drug addiction, prisons, government, military, promoting peace and justice, marriage and family life, youth, abandoned and homeless children, the poor and destitute.

Our charism (the gift that our community gives to the world) is ecclesial or family teams. When we serve at a mission, we strive to serve with our SOLT priests and brothers, SOLT Sisters, and SOLT laity, thereby 
witnessing how the Trinity lives, as three persons in One God. We live as three vocations in one family. 

The Society of Our Lady of the Most Holy Trinity (SOLT) was founded in 1958 by Fr. James Flanagan.