| No. | Name | Type | Language | Counties |
|---|---|---|---|---|
| 0 | JESSICA MARIE | Community | English | Lane |
| 0 | JENNA GENEVE MARILUCH | Standardized | English | Klamath |
| 279 | Tammy S Marino | Master | English | All |
| 1 | Ahmed Marjan | Specialty Master | English | All |
| 0 | REGINA MARKS | Standardized | English | Gilliam, Hood River, Morrow, Umatilla |
| 5 | Beatriz Marron-Molina | Master | English, Spanish | All |
| 0 | AUTUM BREA MARSH | Community | English | Clatsop, Columbia, Tillamook |
| 0 | BRENDA FAYE MARSHALL | Not given | English | Multnomah |
| 0 | Sandra Marsili | Standardized | English | Clackamas, Multnomah, Washington |
| 0 | Nicole Martin | Community | English | Douglas |
| 0 | RHIANNON MARTIN | Master | English | Clackamas, Multnomah |
| 0 | TAMI MARIE MARTIN | Standardized | English | Multnomah, Washington |
| 0 | TERESA LYNETTE MARTIN | Master | English | Jefferson |
| 0 | DONNA MARTINEZ | Standardized | English | Washington |
| 0 | FERNANDO MARTINEZ | Community | English, Spanish | All |
| 1 | KATHRYN MARTINEZ | Community | English | All |
| 4 | THERESA MARTINEZ | Master | English | All |
| 0 | Victoria Marie Martinez | Master | English | All |
| 0 | DAWN K. MARTINI | Master | English | All |
| 0 | COLLEEN MARTINSON | Not given | English | Deschutes |
| 0 | JUDY LEE MARVAL | Standardized | English | Josephine |
| 0 | KATHLEEN MASEK | Standardized | English | Hood River, Wasco |
| 0 | BRENDA MASSIE | Master | English | Gilliam, Hood River, Sherman, Wasco, Wheeler |
| 0 | SHAWN BRUMBACH MASSINGALE | Master | English | Douglas |
| 0 | BETTY MASSONI | Not given | English | Benton |
| 0 | VICTORIA Ortencia MATA LOPEZ | Standardized | English | Tillamook |
| 0 | Adriane Michele Matherne | English | All | |
| 0 | LOREEN MATHIAS | Not given | English | |
| 1 | LISA DARLENE MATHIS | Master | English | Crook, Deschutes, Jefferson |
| 1 | VELDA MATSDORF | Community | English | Benton, Clackamas, Douglas, Jackson, Josephine, Lane, Linn, Marion, Multnomah, Polk, Washington, Yamhill |
| 0 | SUE MATTERS | Standardized | English | Crook, Deschutes, Jefferson |
| 5 | Miren Mattson | Master | English | Benton, Lane, Linn, Marion |
| 0 | SUSAN MAXWELL | Standardized | English | Marion, Polk, Yamhill |
| 0 | GAYLA JEANNE MAY | Standardized | English | Multnomah |
| 0 | SHARON CAROLE MAY | Master | English | Jackson |
| 0 | Heidi Jo Mayberry | Master | English | Umatilla, Union |
| 0 | TINA MAYFIELD | Community | English | Benton, Coos, Lane, Lincoln, Linn, Marion, Polk, Tillamook, Yamhill |
| 0 | Massene Mboup | Master | English, Other | All |
| 0 | ERIC JOHN MCALINN | Master | English | Clackamas, Multnomah |
| 2 | JENIFER ANN MCALLISTER | Master | English | Benton, Lincoln, Linn |
| 3 | HAILEE MCBURNEY | Master | English | All |
| 0 | ANITA MCCLANAHAN | Standardized | English | All |
| 0 | ERIN MARIE MCCLELLAN | Standardized | Clackamas | |
| 0 | Jessica Lyn McClintic | Master | English | All |
| 0 | CHRISTINE TUPPER MCCLURE | Standardized | English | Clatsop, Lincoln, Tillamook |
| 0 | NATALYA MCCOMAS | Master | English | Lane |
| 100 | Joyce Deana McCoy | Master | English | All |
| 0 | HEATHER MCCUEN | Not given | English | Multnomah |
| 0 | Mary Ann McCune | Community | English | Morrow, Umatilla |
| 2 | Sara Beth McCutchen | English | All |