| No. | Name | Type | Language | Counties |
|---|---|---|---|---|
| 1 | BARBARA LYNN ARENA-CRANDALL | Master | English | All |
| 5 | JESSICA ARENDT | Master | English | Clackamas, Multnomah, Washington |
| 0 | JESS ARMAS | Standardized | English | Marion |
| 0 | JAN ARMSTRONG | Standardized | English | Lane |
| 0 | KAREN ANN ARMSTRONG | Standardized | English | Marion |
| 0 | SUSAN GAIL ARMSTRONG | Standardized | English | Douglas, Lane, Marion |
| 0 | SUE ARNDT | Standardized | English | Marion, Polk |
| 3 | Lynn B Arnold | Specialty Master | English | All |
| 5 | Renea Arnold | Master | English | All |
| 0 | ROXANNE ARNOT | Not given | English | Curry |
| 6 | Jory Janet Aronson | Master | English | All |
| 0 | MONA ARRITOLA | Not given | English | Union |
| 0 | ZHULMA ZORAIDA ARROBO | Master | English, Spanish | 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 |
| 8 | Bianela Fabiola Arteta Perez | Master | English, Spanish | All |
| 0 | ALICIA DAWNSTAR ASHBY | Standardized | English | Clackamas, Multnomah, Washington |
| 0 | DIONE MARIE ASHBY | Master | English | All |
| 0 | Sherian Louise Asher | Standardized | English | Deschutes, Gilliam, Grant, Jefferson, Sherman, Umatilla, Wheeler |