| Name | Type | Language | Counties |
|---|---|---|---|
| Ya-Fang Cheng | Master | English, Chinese, Other | Clackamas, Marion, Polk |
| OLGA VLADIMIROVNA CHEREVATENKO | Specialty Master | English, Russian | All |
| WYN CHEUNG | Master | English, Chinese | Clackamas, Hood River, Multnomah, Washington |
| MICHALA CHITWOOD | Not given | English | Deschutes |
| Jamie Cho | Master | English, Chinese, Other | All |
| JENNIFER CHOBAN | Standardized | English | Washington |
| KATHRYN ANN CHRISTENSEN | Standardized | English | Clackamas, Lincoln, Multnomah, Tillamook, Washington |
| David Alan Christiansen | Specialty Community | English | All |
| ELEANOR CHRISTOPHER | Master | English | Clackamas, Multnomah |
| NATALIYA V CHUBAROVA | Master | English, Russian | All |
| BONNIE RUTH CHURCH | Standardized | English | Klamath |
| KRISTIN RENE CHURCH | Standardized | English | |
| MARGIE A. CICERRELLA | Standardized | English | Jackson |
| JAIME CIECALONE | Community | English | Lane |
| LINDA CINNAMOND | Not given | English | Multnomah |
| Teresa Ann Cisneros | Community | English, Spanish | Marion, Polk, Yamhill |
| AMY MCADAMS CLARK | Standardized | English | Multnomah |
| SIOBHAN CLARK | Community | English | Clackamas, Multnomah, Washington |
| Stacia Ann Clark | Master | English, Spanish | All |
| TAMARA DAWN CLARK | Master | English | Lane, Linn, Multnomah |