| No. | Name | Type | Language | Counties |
|---|---|---|---|---|
| 1 | Ahmed Marjan | Specialty Master | English | All |
| 5 | Beatriz Marron-Molina | Master | English, Spanish | All |
| 0 | RHIANNON MARTIN | Master | English | Clackamas, Multnomah |
| 0 | TERESA LYNETTE MARTIN | Master | English | Jefferson |
| 0 | Fernando Martinez | Community | English, Spanish | All |
| 1 | Kathryn Elizabeth Martinez | Community | English | All |
| 4 | THERESA MARTINEZ | Master | English | All |
| 5 | Lisa Michelle Maruna-Tynan | Master | English, Other | All |
| 0 | BRENDA MASSIE | Master | English | Gilliam, Hood River, Sherman, Wasco, Wheeler |
| 0 | SHAWN BRUMBACH MASSINGALE | Master | English | Douglas |
| 0 | Adriane Michele Matherne | English | All | |
| 1 | LISA DARLENE MATHIS | Master | English | Crook, Deschutes, Jefferson |
| 5 | Miren Mattson | Master | English | Benton, Lane, Linn, Marion |
| 0 | Massene Mboup | Master | English, Other | All |
| 2 | JENIFER ANN MCALLISTER | Master | English | Benton, Lincoln, Linn |
| 3 | HAILEE MCBURNEY | Master | English | All |
| 0 | Jessica Lyn McClintic | Master | English | All |
| 0 | NATALYA MCCOMAS | Master | English | Lane |
| 85 | Joyce Deana McCoy | Master | English | All |
| 2 | Sara Beth McCutchen | English | All | |
| 0 | Alisa Ann McDonald | Master | English | Douglas |
| 0 | KATHLEEN MARY MCDONNELL | Master | English | Benton, Lane, Lincoln |
| 0 | RHONDA SUE MCDOWALL | Master | English | All |
| 0 | Kristen E. McKee | Community | English, Spanish | Benton, Clackamas, Columbia, Deschutes, Hood River, Jefferson, Lane, Lincoln, Linn, Marion, Multnomah, Polk, Tillamook, Wasco, Washington, Yamhill |
| 6 | DANIELLE MARIE MCKIDDY | Master | English | Douglas, Klamath, Lake |
| 0 | Yolanda Denise McKinney | Community | English | Multnomah |
| 0 | Laura Nix McLean | Master | English, Spanish | Clackamas, Multnomah |
| 4 | JENNIFER ABIGAIL COOPER MCMULLEN | Master | English, Spanish | Benton, Linn, Marion, Polk, Yamhill |
| 0 | MARY MCNAMEE | Community | English | Coos, Curry |
| 0 | SARA MARGARET MCWILLIAMS | Community | English | All |
| 0 | COLLEEN MEACHAM | Community | English | Clackamas, Multnomah |
| 3 | SANDRA MEADOS | Master | English | All |
| 11 | Marina Anatolyevna Meaney | Master | Russian | Clackamas, Lane, Linn, Marion, Multnomah, Polk, Washington, Yamhill |
| 0 | TRISTA IRENE MEEK | Community | English | Umatilla, Union |
| 0 | RACHELLE MARIE MEJIA | Master | English | Clatsop, Lincoln, Multnomah, Tillamook, Washington, Yamhill |
| 0 | Laura Fernanda Mejia Arroyo | Standardized | English, Spanish | Jackson |
| 0 | Nancy Acosta Melendrez | Master | English, Spanish | Malheur |
| 0 | Abigail Elizabeth Mendez | Master | English, Spanish | Clackamas, Multnomah, Washington |
| 0 | VERONICA MENDOZA OCHOA | Master | English, Spanish | Marion |
| 0 | Jamie Celestia Michaud | Community | English, Other | Clackamas, Hood River, Multnomah, Washington |
| 0 | EILEEN MARIE MICKE-JOHNSON | Master | English | Jackson, Josephine |
| 0 | ASHLEY NICOLE MICKELS | Master | English | Hood River, Wasco |
| 0 | KALLIE MILL | Master | English | Coos, Crook |
| 2 | Katrina Aline Miller | Master | English | All |
| 0 | KIMBERLY MILLER | Standardized | English | Josephine |
| 0 | Melanie Eileen Miller | Master | English | Deschutes |
| 1 | MELISA LYNNE MINER | Master | English | Douglas, Klamath, Lake |
| 0 | Benjamin Minnis | Community | English | Lane |
| 0 | KRISTIN GRACE CHIYOKO MIYAMOTO | Community | English | Clackamas, Columbia, Hood River, Marion, Multnomah, Polk, Wasco, Washington, Yamhill |
| 0 | KATHERINE Lynn MOHR | Master | English | All |