| O'Brien,
Delaney - Maple Valley, WA |
| O'Connor,
Allison - Diamond Bar, CA |
| O'Connor,
Bailey - Eagle Point, OR |
| Oddo,
Gabrielle - Alta Loma, CA |
| Odegard,
Tatum - Mercer Island, WA |
| Oh,
Curtis - Shoreline, WA |
| O'Hara,
Jack - Medford, OR |
| Ojendyk,
Savannah - Seattle, WA |
| Okada,
Karen - Bellevue, WA |
| Okeson,
Makenna - Anchorage, AK |
| Okuna,
Erin - Pearl City, HI |
| Olson,
Anna - Everson, WA |
| Olson,
Jacob - Glendora, CA |
| Olthoff,
Peter - Seattle, WA |
| Onishchenko,
Miroslava - Kent, WA |
| Onishi,
Lynne - Mukilteo, WA |
| Otto,
Chloe - Granite Falls, WA |
| Overly,
Sophia - University Place, WA |