| No. | Name | Type | Language | Counties |
|---|---|---|---|---|
| 0 | AIMEE COLLEEN APT | Master | English | Benton, Clackamas, Clatsop, Columbia, Crook, Deschutes, Douglas, Hood River, Jefferson, Lane, Lincoln, Linn, Marion, Multnomah, Polk, Tillamook, Wasco, Washington, Yamhill |
| 0 | Erin Hennessey Arant | Specialty Master | English | All |
| 2 | PAMELA THOMPSON ARBOGAST | Master | English | Coos, Crook, Curry, Deschutes, Douglas, Jackson, Jefferson, Josephine, Klamath, Lake, Lane, Lincoln |
| 0 | Leslie Arbuckle | Master | English | Clackamas |
| 0 | Cherri Archer | Master | English | Marion, Polk, Yamhill |
| 0 | JORJIE PACIFIC ARDEN | Community | English | Benton, Douglas, Lane, Linn |
| 1 | BARBARA LYNN ARENA-CRANDALL | Master | English | All |
| 3 | Lynn B Arnold | Specialty Master | English | All |
| 6 | Jory Janet Aronson | Master | English | All |
| 0 | Margarita Bibiana Arroyo | Master | English, Spanish | All |
| 0 | Antonio Arroyo-Rojas | Standardized | English, Spanish | Clackamas, Multnomah |
| 7 | OLGA ARSHILOVICH | Master | English, Russian | Marion, Polk, Yamhill |
| 2 | Bianela Fabiola Arteta Perez | Master | English, Spanish | All |
| 0 | DIONE MARIE ASHBY | Master | English | All |
| 14 | TERESA LOUISE ASHFORD | Master | English | All |
| 2 | Kim Lian Ashley | Master | English | All |
| 9 | Sara Ashou | Master | English, Spanish | Clackamas, Multnomah, Washington |
| 1 | Valeria C Atanacio | Master | English, Spanish | All |
| 0 | Haley Atherton | Master | English | All |
| 0 | VIRGINIA KIM ATWOOD | Community | English | Clatsop, Columbia, Tillamook |