| No. | Name | Type | Language | Counties |
|---|---|---|---|---|
| 0 | SYLVIA LEEANN KITTERMAN | Master | English | All |
| 0 | JACQUI KLEEMAN | Standardized | English | Union |
| 0 | Holly Victoria Klein | Master | English | All |
| 0 | JUDY KLING | Not given | English | Washington |
| 0 | MCKENZIE BLUE KLUG | Standardized | English | Douglas, Jackson, Josephine, Lane |
| 0 | JENNIFER KNAPP BEUDERT | Standardized | English | Linn |
| 0 | Katherine Jean Kneupper | Standardized | English | Clackamas, Columbia, Hood River, Multnomah, Washington |
| 0 | CYPRESS KNIGHT | English | Hood River | |
| 0 | LEAH RUTH KNOKE | Community | English | Crook, Deschutes, Jefferson |
| 0 | SAMANTHA KNOUSE | Community | English | All |
| 0 | Carol Knowles | Not given | English | Deschutes |
| 0 | IRINA GENNADYEVNA KNOWLES | Standardized | All | |
| 11 | Lena Colleen Ko | Master | English | All |
| 1 | Angela C Koehler | Master | English | Clackamas |
| 0 | BRENDA ELIZABETH KOEHLER | Master | English | Clackamas, Multnomah |
| 14 | PATSY KOHOUT | Master | English | All |
| 0 | LISA KOPETSKI | Not given | English | Umatilla |
| 6 | ERIN KOST | Master | English | All |
| 0 | Heather Koukel | Community | English | Washington |
| 0 | KAREN JOAN KRAEMER | Community | English | Clackamas, Clatsop, Hood River, Multnomah, Washington |
| 1 | SUSAN MARIE KRAEMER | Community | English | All |
| 0 | Susan Dian Kramer | Community | English | Lincoln, Linn, Marion, Polk, Tillamook, Yamhill |
| 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 |
| 1 | HOLLY ANNE KRIZ ANDERSON | Master | English | Lane |
| 0 | DIANA JEAN KRUSE | Community | English | Clackamas, Marion, Multnomah, Washington |
| 0 | JUDY KUEHL | Community | English | Jackson, Josephine |
| 0 | ALKA KUMAR | Community | English, Other | |
| 9 | CHRIS KURAN | Master | English | Washington |
| 0 | Kim B Kurin | Community | English | Clackamas, Multnomah, Washington |
| 0 | MARSHA DENISE LA VERNE | Master | English | All |
| 0 | Malia Ladd | Master | English | Benton, Crook, Deschutes, Hood River, Klamath, Lake, Marion, Polk |
| 30 | CAROL LAGANO MCMURDIE | Master | English | All |
| 0 | Chad Michael Lahr | Master | English | All |
| 5 | DEBORAH E LAIMON | Master | English | All |
| 12 | Maria Lorraine Lyn Laine | Master | English | Linn, Marion, Polk, Yamhill |
| 0 | ISABEL LAINEZ | Community | English, Spanish | All |
| 0 | Priscilla Joan Lake | Standardized | English | Marion |
| 0 | SUZANNE REBECCA LAMOUREUX | Standardized | English | Lane |
| 14 | SHANDELL LANDON | Master | English | Crook, Deschutes, Jefferson |
| 6 | Jessica BETH LANGSAM | Master | English | All |
| 0 | ANN (Betsy) ELIZABETH LANGSTON | Community | English | Clackamas, Columbia, Coos, Hood River, Lane, Marion, Multnomah, Polk, Tillamook, Washington |
| 0 | JEREMY LANSING | Standardized | English | Lane |
| 0 | ARMAND JOSEPH LAREAU | Not given | English | All |
| 0 | Jessica Marie Larios | Master | English, Spanish | Marion, Polk |
| 0 | CATHERINE ANN LARIVE | Standardized | English | Jackson |
| 0 | KEVIN MERLAND LARSEN | Standardized | English, Spanish | Jefferson, Klamath |
| 187 | Leilani Grace Larsen | Master | English | All |
| 0 | AMY M LARSON | Community | English | Jackson, Josephine |