| No. | Name | Type | Language | Counties |
|---|---|---|---|---|
| 1 | Chelsea Rene Coots | Master | English | Marion, Polk, Yamhill |
| 0 | Margaret Hemphill Copeland | Standardized | Spanish | Jackson, Josephine |
| 0 | Jacquelyn Kae Cordero | Community | English | Coos, Curry, Jackson, Josephine, Klamath |
| 0 | JESSICA MARIE CORDERO | Community | English | Coos, Curry, Jackson, Josephine |
| 0 | TONYA LYNN CORDERO | Standardized | English | All |
| 0 | APRIL K CORIL | Master | English | Clackamas, Marion, Multnomah, Washington |
| 7 | Jennifer Michelle Cork | Master | English | Benton, Clatsop, Columbia, Lincoln, Linn, Marion, Multnomah, Polk, Tillamook, Washington, Yamhill |
| 0 | JODIE CORLESS | Not given | English | Marion |
| 1 | Estonia Latavia Cornett | Master | English | Clackamas, Multnomah, Washington |
| 0 | Lorena Cortes Gonzalez | Standardized | English, Spanish | Morrow, Multnomah, Umatilla |
| 0 | Andrea Kay Cortese | Community | English | Clackamas, Hood River, Lane, Marion, Multnomah, Wasco, Washington |
| 0 | APRIL COTE | Community | English | Clackamas, Multnomah |
| 0 | Rochelle Alene Coulombe | Master | English | Clatsop, Columbia, Tillamook |
| 0 | CATHERINE COWLES | Not given | English | Lane |
| 0 | CATHERINE CRAFT | Standardized | English | Multnomah, Washington |
| 0 | KRISTEN B. CRAKES | Standardized | English | Deschutes |
| 3 | LINDA MARIE CRAVEN | Master | English | All |
| 0 | DAWN CRAWFORD | Master | English | All |
| 0 | Janis Irene Crawford | Specialty Master | English | All |
| 0 | SUE CRAWFORD | Community | English | All |