| Name | Type | Language | Counties |
|---|---|---|---|
| Linda Marie Kirk | Standardized | English | All |
| Tanya Michelle Kirk | Master | English | Marion, Polk, Yamhill |
| BERNADINE RUTH KIRKPATRICK | Master | English, Spanish | |
| Jennifer Lea Kirksey | Master | English | Multnomah |
| KATIE KISSINGER | Master | English | All |
| SYLVIA LEEANN KITTERMAN | Master | English | All |
| JACQUI KLEEMAN | Standardized | English | Union |
| Holly Victoria Klein | Master | English | All |
| JUDY KLING | Not given | English | Washington |
| MCKENZIE BLUE KLUG | Standardized | English | Douglas, Jackson, Josephine, Lane |
| JENNIFER KNAPP BEUDERT | Standardized | English | Linn |
| Katherine Jean Kneupper | Standardized | English | Clackamas, Columbia, Hood River, Multnomah, Washington |
| CYPRESS KNIGHT | English | Hood River | |
| LEAH RUTH KNOKE | Community | English | Crook, Deschutes, Jefferson |
| SAMANTHA KNOUSE | Master | English | All |
| Carol Knowles | Not given | English | Deschutes |
| IRINA GENNADYEVNA KNOWLES | Standardized | All | |
| Lena Colleen Ko | Master | English | All |
| Angela C Koehler | Master | English | Clackamas |
| BRENDA ELIZABETH KOEHLER | Master | English | Clackamas, Multnomah |