| Name | School | Sub-Type |
|---|---|---|
| Lake Hills Building Use | ||
| Lake Hills Soccer | ||
| Lake Hills Soccer Club | Classification 3 | |
| Lake Wa Dental Hygienist | ||
| Lakeridge Estates HOA | ||
| Lighthouse for the Blind | Classification 3 | |
| Little Masters Club | Chinook MS | |
| Little School | Classification 2 | |
| Little Wolverines Basketball Camp | ||
| Local Hoops | ||
| Lustre Studios | Chinook MS | |
| MacKnight - Travel | Newport High School | |
| Mana Media Group | ||
| Marching Band | Newport High School | |
| Mars Hill Church | Classification 3 | |
| Math Circle | Classification 2 | |
| Mercy Lay | ||
| Microsoft | ||
| Mind Tree Ltd | ||
| Miss VietNam of Washington Pageant | Classification 3 | |
| Miss Vietnam of Washington | Classification 4 | |
| Mohan Ski & Boarding | ||
| Mohini School of Dance | ||
| Mudville Youth Baseball Club dba Mudville Pinnacle 18U | ||
| NANBF Natural Cascades | Classification 3 | |
| NCL - EMEERALD CITY CHAPTER | ||
| NETVERSANT | Newport High School | |
| NEW to BSD-Pre-Reg. to NHS | Newport High School | |
| NEYB - Bellevue Club | ||
| NGBA BOARD | Newport High School |
