| No. | Name | Type | Language | Counties |
|---|---|---|---|---|
| 1 | Charleen Lynn Kepner | Community | English | All |
| 25 | Rachel Ainsley Kessler | Specialty Master | English | All |
| 0 | MARTHA SILVIA KHAN | Standardized | English | Crook, Deschutes |
| 2 | Debra Whalley Kidney | Master | English | All |
| 0 | MCKENZIE KIHS | Master | English | Crook, Deschutes, Jefferson |
| 0 | MARY ANNE KILLPACK | Master | English | Multnomah |
| 0 | Sheila Kilpatrick | Community | English | Lane, Marion, Multnomah, Polk, Washington |
| 0 | APRIL KATHLEEN KILSTROM | Master | English | Clackamas, Multnomah |
| 4 | Younghee M Kim | Master | English, Other | Douglas, Jackson, Josephine, Klamath, Lane, Multnomah |
| 0 | HEATHER KINLIN | Master | English | Multnomah |
| 6 | Kristina Lynn Kirinch | Master | English | All |
| 0 | Tanya Michelle Kirk | Master | English | Marion, Polk, Yamhill |
| 6 | KATIE KISSINGER | Master | English | All |
| 0 | SYLVIA LEEANN KITTERMAN | Community | English | Benton, Douglas, Lane, Linn |
| 0 | Holly Victoria Klein | Master | English | All |
| 0 | LEAH RUTH KNOKE | Community | English | Crook, Deschutes, Jefferson |
| 0 | SAMANTHA KNOUSE | Community | English | All |
| 11 | Lena Colleen Ko | Master | English | All |
| 1 | Angela C Koehler | Master | English | Clackamas |
| 0 | BRENDA ELIZABETH KOEHLER | Master | English | Clackamas, Multnomah |
| 5 | Erin Kost | Master | English | All |
| 0 | KAREN JOAN KRAEMER | Community | English | Clackamas, Clatsop, Hood River, Multnomah, Washington |
| 0 | BreAnna Rashawn Krawczyk | Community | English | Josephine |
| 0 | KAREN JO KREITZER | Master | English | Clackamas, Marion |
| 0 | SUSY IVONNE KRISTIN | Community | Spanish | Clackamas, Columbia, Grant, Hood River, Jackson, Klamath, Lake, Marion, Multnomah, Tillamook, Wasco, Yamhill |
| 0 | JUDY KUEHL | Community | English | Jackson, Josephine |
| 0 | Kim B Kurin | Community | English | Clackamas, Multnomah, Washington |
| 0 | MARSHA DENISE LA VERNE | Master | English | All |
| 29 | CAROL LAGANO MCMURDIE | Master | English | All |
| 5 | DEBORAH E LAIMON | Master | English | Lane |
| 5 | Maria Lorraine Lyn Laine | Master | English | Linn, Marion, Polk, Yamhill |
| 0 | SUZANNE REBECCA LAMOUREUX | Standardized | English | Lane |
| 9 | Shandell Louise Landon | Master | English | Crook, Deschutes, Jefferson |
| 6 | JESSICA BETH LANGSAM | Master | English | All |
| 0 | Jessica Marie Larios | Master | English, Spanish | Marion, Polk |
| 0 | CATHERINE ANN LARIVE | Standardized | English | Jackson |
| 187 | Leilani Grace Larsen | Master | English | All |
| 0 | AMY M LARSON | Community | English | Jackson, Josephine |
| 3 | KIMBERLY LARSON | Master | English | Clackamas, Hood River, Multnomah, Washington |
| 1 | Darby Jean Lasley | Master | English | All |
| 0 | HEIDI NOEL LAWLER | Community | English | Clackamas, Multnomah, Washington |
| 0 | Jennifer Lynne Lawler | Community | English | Washington |
| 56 | Kelley June Lawson | Master | English | All |
| 0 | CHARRA ROSE LEBEDA | Community | English | Multnomah, Washington, Yamhill |
| 0 | YU YEN CHIU LEE | Community | Other | Multnomah, Washington |
| 0 | Emilee Leeper | Community | English | Jackson, Jefferson |
| 0 | SARAH ANNE LEHMANN | Community | English | Marion, Polk |
| 0 | ASHLEY CATHERINE LEIGH | Community | English | Clackamas, Multnomah, Washington |
| 2 | CATHERINE ANN LEMBLE | Master | English | Jackson, Josephine |
| 4 | Gabriela Lemus-Macias | Master | English | Baker, Grant, Harney, Malheur, Morrow, Umatilla, Union, Wallowa |