| Name | Type | Language | Counties |
|---|---|---|---|
| CHRISTINA SUZANNE ONEILL | Master | English | All |
| LISSET ONEILL | Master | English, Spanish | Multnomah |
| Nancy L Orem | Master | English | All |
| RAUL DAVID OROZCO FUENTES | Master | English, Spanish | Benton, Linn, Marion, Polk |
| ANA LAURA ORTEGA | Standardized | Hood River, Wasco | |
| Kay Guadalupe Ortega | Standardized | English, Spanish | Jackson, Jefferson, Josephine, Klamath |
| MIRIAM NANCY ORTIZ VARGAS | Standardized | Crook, Deschutes, Jefferson | |
| ELENA ESMERALDA ORTIZ-ROBLES | Community | Spanish | Hood River, Multnomah, Wasco |
| WYNNE LOUISE OSBORNE | Community | English | Clackamas, Clatsop, Crook, Deschutes, Jefferson, Tillamook, Washington |
| CINDY RAE OVERSTREET | Master | English | Clackamas, Clatsop, Columbia, Multnomah, Washington |
| Angela Mary Oviedo | Standardized | English | Malheur |
| RUTH OXMAN | English | ||
| SARA PACKER | Not given | English | Multnomah |
| SHELLY Annette PADDOCK | Community | English | Clackamas, Marion, Multnomah, Polk, Washington, Yamhill |
| KARISSA LYNN PALMER | Master | English | All |
| Delia E Panchot | Community | English | Deschutes |
| LINDA PANGBURN | Standardized | English | |
| NORMA JEAN PANOWICZ | Standardized | English | Clackamas, Gilliam, Hood River, Multnomah, Sherman, Wasco |
| NORMA E PANTOJA | Master | Spanish | Jackson, Josephine |
| MONSERRAT PANTOJA-RAMIREZ | Standardized | English, Spanish | Marion, Polk |