| No. | Name | Type | Language | Counties |
|---|---|---|---|---|
| 0 | OLGA VLADIMIROVNA CHEREVATENKO | Specialty Master | English, Russian | All |
| 5 | WYN CHEUNG | Master | English, Chinese | Clackamas, Hood River, Multnomah, Washington |
| 0 | Jamie Cho | Master | English, Chinese, Other | All |
| 1 | ELEANOR CHRISTOPHER | Master | English | Clackamas, Multnomah |
| 0 | NATALIYA V CHUBAROVA | Master | English, Russian | All |
| 0 | JAIME CIECALONE | Community | English | Lane |
| 0 | Teresa Ann Cisneros | Community | English, Spanish | Marion, Polk, Yamhill |
| 0 | Stacia Ann Clark | Master | English, Spanish | All |
| 0 | Tamara Dawn Clark | Master | English | Benton, Clackamas, Douglas, Lane, Lincoln, Linn, Marion, Multnomah, Polk, Washington, Yamhill |
| 1 | MOLLY CLEMENT | Master | English | Jackson, Josephine |
| 0 | Kendra Janine Coates | Master | English | All |
| 0 | ANDREA COFFEE | Community | English | Lane |
| 0 | TONYA COKER | Master | English | All |
| 0 | BRANDY COLEMAN | Master | English | All |
| 3 | PILAR ELENA COLLAZO | Master | English, Spanish | Clackamas, Hood River, Multnomah, Washington |
| 3 | MELINDA ROSE COLLIER | Master | English | Klamath, Lake |
| 0 | Andrea Maria Collins | Master | English | Grant, Morrow, Umatilla, Union |
| 0 | EMILY SUSAN COLLINS | Standardized | English | All |
| 0 | Lori Colvin | Master | English | Crook, Deschutes, Jefferson, Klamath, Lake |
| 0 | Michael (Michael) Ames Connor | Master | English | All |