Mary Collins, OSB (1935-2024), was a Benedictine sister of Mount St. Scholastica, Atchinson, Kansas. She taught at the Catholic University of America for many years and was a significant figure in the broader world of Benedictine women. She was first councilor for the Federation of St. Scholastica for twelve years and a consultant or author for many of their documents. Sister Mary was a member of the International Commission on English in the Liturgy (ICEL) and belonged to several professional theological organizations. She wrote, collaborated on, or edited a large number of articles and books on religion and liturgy for which she was widely known.