| Name | Type | Language | Counties |
|---|---|---|---|
| TALIA MARCUCCI OSITIS | Master | English | Clackamas, Multnomah, Washington |
| Jessica R. Marie | Standardized | English | Marion, Polk, Yamhill |
| JESSICA MARIE | Community | English | Lane |
| JENNA GENEVE MARILUCH | Standardized | English | Klamath |
| Tammy S Marino | Master | English | All |
| Ahmed Marjan | Specialty Master | English | All |
| REGINA MARKS | Standardized | English | Gilliam, Hood River, Morrow, Umatilla |
| Beatriz Marron-Molina | Master | English, Spanish | All |
| AUTUM BREA MARSH | Community | English | Clatsop, Columbia, Tillamook |
| BRENDA FAYE MARSHALL | Not given | English | Multnomah |
| Sandra Marsili | Standardized | English | Clackamas, Multnomah, Washington |
| Nicole Martin | Community | English | Douglas |
| RHIANNON MARTIN | Master | English | Clackamas, Multnomah |
| TAMI MARIE MARTIN | Standardized | English | Multnomah, Washington |
| TERESA LYNETTE MARTIN | Master | English | Jefferson |
| DONNA MARTINEZ | Standardized | English | Washington |
| FERNANDO MARTINEZ | Master | English, Spanish | All |
| KATHRYN MARTINEZ | Community | English | All |
| THERESA MARTINEZ | Master | English | All |
| DAWN K. MARTINI | Master | English | All |
| COLLEEN MARTINSON | Not given | English | Deschutes |
| JUDY LEE MARVAL | Standardized | English | Josephine |
| KATHLEEN MASEK | Standardized | English | Hood River, Wasco |
| BRENDA MASSIE | Master | English | Gilliam, Hood River, Sherman, Wasco, Wheeler |
| SHAWN BRUMBACH MASSINGALE | Master | English | Douglas |
| BETTY MASSONI | Not given | English | Benton |
| VICTORIA Ortencia MATA LOPEZ | Standardized | English | Tillamook |
| LOREEN MATHIAS | Not given | English | |
| LISA DARLENE MATHIS | Master | English | Crook, Deschutes, Jefferson |
| VELDA MATSDORF | Community | English | Benton, Clackamas, Douglas, Jackson, Josephine, Lane, Linn, Marion, Multnomah, Polk, Washington, Yamhill |
| SUSANNE (Sue) MARIE MATTERS | Standardized | English | Crook, Deschutes, Jefferson |
| MIREN MATTSON | Master | English | Benton, Lane, Linn, Marion |
| SUSAN MAXWELL | Standardized | English | Marion, Polk, Yamhill |
| GAYLA JEANNE MAY | Standardized | English | Multnomah |
| SHARON CAROLE MAY | Master | English | Jackson |
| Heidi Jo Mayberry | Master | English | Umatilla, Union |
| TINA MAYFIELD | Community | English | Benton, Coos, Lane, Lincoln, Linn, Marion, Polk, Tillamook, Yamhill |
| Massene Mboup | Master | English, Other | All |
| ERIC JOHN MCALINN | Master | English | Clackamas, Multnomah |
| JENIFER ANN MCALLISTER | Master | English | Benton, Lincoln, Linn |
| HAILEE MCBURNEY | Master | English | All |
| ANITA MCCLANAHAN | Standardized | English | All |
| ERIN MARIE MCCLELLAN | Standardized | Clackamas | |
| Jessica Lyn McClintic | Master | English | All |
| CHRISTINE TUPPER MCCLURE | Standardized | English | Clatsop, Lincoln, Tillamook |
| NATALYA MCCOMAS | Master | English | Lane |
| Joyce Deana McCoy | Master | English | All |
| HEATHER MCCUEN | Not given | English | Multnomah |
| Mary Ann McCune | Community | English | Morrow, Umatilla |
| Sara Beth McCutchen | English | All |