| Name | Type | Language | Counties |
|---|---|---|---|
| Elizabeth Anne Caravaca | Master | English | Clackamas, Hood River, Lane, Lincoln, Marion, Multnomah, Polk, Washington |
| Daniela Cardenas | Master | Spanish | All |
| KAREN SUE CARLISLE | Standardized | English | |
| ANNE CHARLOTTE CARLSON | Standardized | English | Clackamas, Multnomah, Washington, Yamhill |
| PAULINE SUE CARLSON | Not given | English | Multnomah |
| JESSIE DAWN CARPENTER | Master | English | All |
| KAYE A. CARPENTER | Not given | English | Jackson |
| MILAGROS CARRANZA | Standardized | Clackamas, Columbia, Marion, Multnomah, Washington, Yamhill | |
| Diana Carrillo | Master | English, Spanish | Baker, Benton, Deschutes, Jefferson, Linn, Malheur, Marion, Yamhill |
| Barbara Kelly Carter | Specialty Master | English | Curry, Douglas, Jackson, Josephine, Klamath, Lane |
| ADELA CARTNEGA | Standardized | English | Multnomah |
| GEORGE C CARTNER | Master | English | All |
| PATRICIA MAY CARTY | Standardized | English | Jackson, Josephine, Klamath, Lake |
| STACEY CASELLA | Master | English | All |
| AMANDA CASIAN | Community | Spanish | All |
| MARIELA CASTELLANOS | Community | English, Spanish | Lane |
| VIOLETA LOURDES CASTILLO | Community | English, Spanish | Multnomah, Washington |
| MERCEDES PAINE CASTLE | Master | English | All |
| PHYLLIS CASTLE | Master | English | Clatsop, Columbia, Tillamook |
| JULIE CATT | Master | English | Clatsop, Columbia, Multnomah, Tillamook, Washington |