| Name | Type | Language | Counties |
|---|---|---|---|
| BRENDA MASSIE | Master | English | Gilliam, Hood River, Sherman, Wasco, Wheeler |
| SHAWN BRUMBACH MASSINGALE | Master | English | Douglas |
| RONDA MASSON | Standardized | ||
| LISA DARLENE MATHIS | Master | English | Crook, Deschutes, Jefferson |
| MIREN MATTSON | Master | English | Benton, Lane, Linn, Marion |
| Massene Mboup | Master | English, Other | All |
| JENIFER ANN MCALLISTER | Master | English | Benton, Lincoln, Linn |
| HAILEE MCBURNEY | Master | English | All |
| Jessica Lyn McClintic | Master | English | All |
| NATALYA MCCOMAS | Master | English | Lane |