| Name | Type | Language | Counties |
|---|---|---|---|
| LINDA SINCLAIR | Standardized | English | Washington |
| Linda Sinclair | Master | English | Lane, Linn, Marion, Polk, Washington |
| AMBER LILA SINGH | Master | English | Douglas, Klamath, Lake |
| NICOLE ELAINE SINGLETON | Community | English | All |
| DEBORAH MARGARET SIPE | Standardized | English | Tillamook |
| Cherie C Skillings | Master | English | Crook, Deschutes, Jefferson, Lane |
| PATRICIA GALE SKINNER | Standardized | English | Clatsop |
| REBECCA ELAINE SKYLES | Community | English | Multnomah, Washington |
| JENNIFER ANN SLATER | Standardized | English | Douglas, Lane |
| MISTY MICHELLE SLATER | Standardized | English | Baker, Clackamas, Hood River, Lane, Multnomah, Umatilla, Union, Wallowa, Washington, Yamhill |
| Zoya Edwardovna Slatsky | Standardized | Douglas, Lane | |
| KRISTEN SLATT | Master | English | Gilliam, Grant, Harney, Hood River, Lane, Malheur, Morrow, Sherman, Umatilla, Union, Wallowa, Wasco, Wheeler |
| SUSAN JANE SMALLSREED | Standardized | English | Clackamas, Multnomah, Washington |
| SARA SMART | Master | English | Marion, Polk, Yamhill |
| ALICE ELIZABETH SMITH | Master | English | All |
| AMY Rae SMITH | Community | English | Benton, Lincoln, Linn |
| Benjamin William Smith | Master | English | All |
| Charles (Charles) Hughie Smith | Master | English | All |
| DIANE KATHRYN SMITH | Master | English | All |
| Julie Anne Smith | Master | English |