| No. | Name | Type | Language | Counties |
|---|---|---|---|---|
| 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 |
| 112 | Joyce Deana McCoy | Master | English | All |
| 0 | HEATHER MCCUEN | Not given | English | Multnomah |
| 0 | Mary Ann McCune | Community | English | Morrow, Umatilla |