| No. | Name | Type | Language | Counties |
|---|---|---|---|---|
| 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 |
| 5 | Emily Ruth Champlin | Master | English | All |
| 0 | JAZMIN TAMARA CHAMUL | Community | English | Jackson |
| 0 | JANE CLAIRE CHANDLER | Community | English | Baker |
| 2 | YIHYUN (Maggie) 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 |
| 15 | Minaz Chauthani | Master | English | All |
| 4 | JENNY ANN CHAVEZ | Master | English | Benton, Lincoln, Linn |
| 1 | Ya-Fang Cheng | Master | English, Chinese | Benton, Clackamas, Jefferson, Lane, Lincoln, Linn, Marion, Multnomah, Polk, Sherman, Washington, Yamhill |
| 0 | OLGA VLADIMIROVNA CHEREVATENKO | Specialty Master | English, Russian | All |
| 5 | WYN CHEUNG | Master | English, Chinese | Clackamas, Hood River, Multnomah, Washington |