| Kalberer,
Jayden - Lynnwood, WA |
| Kalvelage,
Kira - Fall City, WA |
| Kambai,
Denis - Lakewood, WA |
| Karim,
Muntasin - Feni Sadar, Feni, BANGLADESH |
| Kasparova,
Nicole - Burien, WA |
| Katumo,
Joan - Kent, WA |
| Kawangu,
Pascal - Newcastle, WA |
| Kearns,
Layne - Corvallis, MT |
| Kessler,
Paige - Castle Rock, WA |
| Ketcham,
Isaac - Sammamish, WA |
| Kilby,
Emma - Bainbridge Is, WA |
| Kim,
Daniel - Lakewood, WA |
| Kim,
Gloria - Kent, WA |
| Kim,
Joyce - Edmonds, WA |
| Kim,
Jung Ah - Auburn, WA |
| Kim,
Samuel - Kenmore, WA |
| Kim,
Sofie - Lynnwood, WA |
| Kinloch,
Logan - Yakima, WA |
| Klein,
Paige - Somers Point, NJ |
| Kogoya,
Bernard - Sentani, INDONESIA |
| Kolobovnikov,
Aleksandra - Vancouver, WA |
| Kong,
Brian - Bellevue, WA |
| Kopp,
Samantha - Maple Valley, WA |
| Korth,
Nathan - Bonney Lake, WA |
| Kosanovskaya,
Tatiana - Tacoma, WA |
| Kozyrev,
Anna - Seattle, WA |
| Krieger,
Pippa - Chandler, AZ |
| Krivanek,
Rachel - Redmond, WA |
| Ku,
Jasmine - Redmond, WA |
| Kuang,
Sarah - Lynnwood, WA |
| Kubota,
Hikaru - Shinagawa, JAPAN |
| Kuo,
Charis - Kaohsiung, TAIWAN |
| Kwan,
Jeffrey - Bellevue, WA |