The Maryknoll Sisters, are an institute of Catholic religious sisters founded in the village of Ossining, Westchester County, New York, in 1912, six months after the 1911 creation of the Maryknoll community of missionary brothers and fathers. Until 1954, when they became a pontifical institute, the religious institute was known as the Foreign Mission Sisters of St. Dominic. The sisters use the suffix "M.M." after their names.

Maryknoll Convent School is a Roman Catholic girls' school with primary and secondary sections in Hong Kong. It was established in 1925 by sisters of the Maryknoll Sisters, a Catholic institute founded by Mother Mary Joseph.