Maryknoll is a name shared by three organizations (two religious institutes and one lay ministry) that are part of the Roman Catholic Church: Maryknoll Fathers and Brothers (Catholic Foreign Mission Society of America; Maryknoll Society), Maryknoll Sisters (Maryknoll Sisters of St. Dominic), and Maryknoll Lay Missioners.
Prior to 1906, the United States was on a roster of Catholic mission territories compiled by the Vatican. It was part of an era of heavy migrations of European Catholics to the United States and there was a cultural hostility to Roman Catholicism. The establishment of Maryknoll for foreign missions came at a time when the Catholic church was focussing its energies on that anti-Catholic bias within the United States. "Out of the 17,000 Americans serving as Catholic priests at the time, for example, the number serving in foreign missions was 14." In 1907, Father James Walsh of Boston began publishing The Field Afar, a mission magazine that would later become Maryknoll. The following year, Mary "Mollie" Josephine Rogers (later Mother Mary Joseph, MM) began helping Walsh with editing, translating and writing.