| Sister Carolyn Macdonald, MM |
| Sister Mary Gregory MacKey, MM |
| Sister M. Beata Mackie, MM |
| Sister Anita Marie MacWilliam, MM |
| Sister Laura Magallanes, MM |
| Sister Adele Marie Magona, MM |
| Sister M. Patrick Maher, MM |
| Sister Patricia Maher, MM |
| Sister Irene Mahoney, MM |
| Sister Joseph Marian Mahoney, MM |
| Sister Maureen Mahoney, MM |
| Sister Lelia Makra, MM |
| Sister Theresa Marie Maksym, MM |
| Sister Gertrude Maley, MM |
| Sister Joan Malherek, MM |
| Sister Mary Malherek, MM |
| Sister Katherine Mary Mallon, MM |
| Sister Veronica Malloy, MM |
| Sister M. Noreen Malone, MM |
| Sister Ann Maloney, MM |
| Sister Jean Maloney, MM |
| Sister Mary Bernard Maloney, MM |
| Sister Theresa Mangieri, MM |
| Sister Mary Lucrezia Maniscalco, MM |
| Sister Eileen Manning, MM |
| Sister Santa Maria Manning, MM |
| Sister M. Francis DeSales Marsland, MM |
| Sister Grace Marian Martel, MM |
| Sister Mary Louise Martin, MM |
| Sister Mercedes Maria Martin, MM |
| Sister Veronica Mary Martin, MM |
| Sister Veronica Mary Martin, MM |
| Sister Barbara Masterson, MM |
| Sister Bernadette Mathieu, MM |
| Sister Eileen Marie Mattern, MM |
| Sister Marie May, MM |
| Sister Anna McAnany, MM |
| Sister Mary Ancilla McArdle, MM |
| Sister Mary Caritas McCabe, MM |
| Sister M. Amadeus McCallister, MM |
| Sister Julie McCarthy, MM |
| Sister M. Aidan McCarthy, MM |
| Sister Mary Dennis McCarthy, MM |
| Sister Magdalen Mary McCloskey, MM |
| Sister Janet McConnell, MM |
| Sister Mary McCormick, MM |
| Sister Rose Corde McCormick, MM |
| Sister Margaret McCoy, MM |
| Sister Rose Teresa McCullough, MM |
| Sister Elizabeth McDermott, MM |
| Sister Mary Zita McDermott, MM |
| Sister Alice McDonald, MM |
| Sister Dorothy Therese McDonald, MM |
| Sister M. Aloysius McDonald, MM |
| Sister Regina McEvoy, MM |
| Sister Anne Maura McGarvey, MM |
| Sister Mary St. Hugh McGettigan, MM |
| Sister Alice Regina McGinn, MM |
| Sister Catherine McGovern, MM |
| Sister Mary McGovern, MM |
| Sister Anne McGowan, MM |
| Sister Dorothy McGowan, MM |
| Sister Rose McGrale, MM |
| Sister Maureen McGuane, MM |
| Sister Madeline McHugh, MM |
| Sister Mary Florence McHugh, MM |
| Sister Eileen McIntyre, MM |
| Sister Emily McIver, MM |
| Sister Joan McKay, MM |
| Sister Rose Christopher McKeegan, MM |
| Sister Agnes McKeirnan, MM |
| Sister Mary Aquinas McKenna, MM |
| Sister Mary DeLellis McKenna, MM |
| Sister Mary Paul McKenna, MM |
| Sister Mary Regis McKenna, MM |
| Sister Richard Marie McKinney, MM |
| Sister Janice McLaughlin, MM |
| Sister Norbert McLaughlin, MM |
| Sister Agnes Mary McLean, MM |
| Sister Joanne McMahon, MM |
| Sister Lumena McMahon, MM |
| Sister M. St. Rita McMahon, MM |
| Sister Ignatia McNally, MM |
| Sister Margretta McRae, MM |
| Sister M. Paraclita McTigue, MM |
| Sister Alice Meenan, MM |
| Sister Aloysia Menne, MM |
| Sister Miriam Jose Mercado, MM |
| Sister Barbara Rose Mersinger, MM |
| Sister Joan Metzner, MM |
| Sr. Mary Ladislaus Metzner, MM |
| Sister Beatrice Meyer, MM |
| Sr. Marie Louise Meyer, MM |
| Sister Leona Michiels, MM |
| Sister Julie Miller, MM |
| Sister M. Boniface Miller, MM |
| Sister Miriam Joseph Miller, MM |
| Sister M. Bridgettine Mills, MM |
| Sister M. Clare Miltenberger, MM |
| Sister Dolores Mitch, MM |
| Sister Mary Leo Modic, MM |
| Sister M. Monica Moffatt, MM |
| Sister Mary Brendan Moloney, MM |
| Sister Margaret Monroe, MM |
| Sister M. St. Gabriel Mooney, MM |
| Sister Mary Catherine Mooney, MM |
| Sister M. Gertrude Moore, MM |
| Sister Mary Gertrude Moore, MM |
| Sister Marie Morgan, MM |
| Sister Mary Moriarty, MM |
| Sister Alice Morrison, MM |
| Sister Anna Mary Moss, MM |
| Sister Miriam Xavier Mug, MM |
| Sister Gabriella Mulherin, MM |
| Sister M. Annunciata Mulkern, MM |
| Sister Madelon Marie Mullen, MM |
| Sister Mary Consolata Mullen, MM |
| Sister Mary DeSales Mullen, MM |
| Sister Ruth Mary Mullen, MM |
| Sister Dorothy Mulligan, MM |
| Sister Francis Ann Mulligan, MM |
| Sister Annette Mulry, MM |
| Sister Jean Mundy, MM |
| Sister Claire Murphy, MM |
| Sister Ellen Mary Murphy, MM |
| Sister Frances Murphy, MM |
| Sister Helen Mary Murphy, MM |
| Sister Johanna Marie Murphy, MM |
| Sister M. Fides Murphy, MM |
| Sister Marie Murphy, MM |
| Sister Martha Murphy, MM |
| Sister Mary Carmel Murphy, MM |
| Sister Mary Una Murphy, MM |
| Sister Peter Marie Murphy, MM |
