| No. | Name | Type | Language | Counties |
|---|---|---|---|---|
| 0 | ADELA CARTNEGA | Standardized | English | Multnomah |
| 0 | GEORGE C CARTNER | Master | English | All |
| 0 | PATRICIA MAY CARTY | Standardized | English | Jackson, Josephine, Klamath, Lake |
| 0 | STACEY CASELLA | Master | English | All |
| 0 | VIOLETA CASTILLO | Community | English, Spanish | Multnomah, Washington |
| 0 | MERCEDES PAINE CASTLE | Master | English | All |
| 0 | PHYLLIS CASTLE | Master | English | Clatsop, Columbia, Tillamook |
| 1 | JULIE CATT | Master | English | Clatsop, Columbia, Tillamook |
| 3 | PATRICIA CAVANAUGH | Master | English | All |
| 1 | LESLIE CELESTIN | Master | English | Clackamas, Columbia, Hood River, Multnomah, Washington |
| 0 | Laurissa B Cervantes | Community | English | Hood River |
| 0 | CLAUDIA CERVANTES LOPEZ | Community | Spanish | Deschutes, Douglas, Jackson, Jefferson, Josephine, Klamath |
| 0 | DEEDA CHAMBERLAIN | Standardized | English | Marion |
| 1 | Emily Ruth Champlin | Master | English | All |
| 0 | JAZMIN TAMARA CHAMUL | Community | English | Jackson |
| 0 | JANE CLAIRE CHANDLER | Community | English | Baker |
| 0 | YIHYUN MAGGIE CHANG | Specialty Master | English, Chinese | Multnomah, Washington |
| 2 | Mae Leann Chao | Master | English, Other | Multnomah |
| 1 | LIANE ALANE CHAPPELL | Master | English | Clackamas, Clatsop, Columbia, Multnomah, Tillamook, Washington |
| 0 | Ambreen Chaudhary | Master | English | Marion, Polk, Washington, Yamhill |