| No. | Name | Type | Language | Counties |
|---|---|---|---|---|
| 1 | ROBIN Lynn LLOYD | Master | English | Clackamas, Multnomah, Washington |
| 9 | NATALIE CHRISTINE LO | Master | English | Coos, Curry |
| 0 | Jamie Lea Loiland | Standardized | English | Baker, Gilliam, Grant, Hood River, Malheur, Morrow, Umatilla, Union, Wallowa, Wasco, Wheeler |
| 0 | Erin Michelle Lolich | Master | English | All |
| 45 | AMY ALISA LOMANTO | Master | English | All |
| 1 | AMBER DAWN LOMASCOLA | Master | English | All |
| 0 | KIMBERLY CRISS LONG | Master | English | Clackamas |
| 1 | Kristen (Kris) D Long | Master | English | Washington |
| 0 | Miranda Kaye Long | Master | English | All |
| 0 | SCHLEE CRYSTINA LOOMIS PULIDO | Community | English | Clackamas, Hood River, Multnomah, Sherman, Wasco |
| 12 | ROBYN ANN LOPEZ MELTON | Master | English, Spanish | All |
| 0 | Jasmine Ujima Love | Master | English, Spanish, Other | All |
| 0 | AMY NICOLE LOVELACE | Master | English | Clackamas, Clatsop, Coos, Curry, Douglas, Hood River, Josephine, Klamath, Lane, Lincoln, Linn, Marion, Multnomah, Polk, Tillamook, Wasco, Washington, Yamhill |
| 0 | SHEILA LOVELY | Community | English | Lane, Marion, Multnomah, Polk, Washington |
| 0 | GEOFFREY N LOWRY | Standardized | English | Jackson |
| 0 | ANA LUGO-FERRIN | Master | Spanish | Coos, Curry |
| 0 | Jen Lumanlan | Master | English | All |
| 0 | Jackeline Luna | Master | Spanish | Multnomah |
| 0 | MELISSA ANNE LUSK | Standardized | English | Washington, Yamhill |
| 1 | Nadia Berenice Lutje-Tort | Master | English, Spanish | Douglas, Lane, Linn |