| Kelly Shires Breast Cancer Foundation, Kelly Shires Breast Cancer Snow Run | Newmarket |
| Kempenfelt Bay Athletic Club, Équipe de lutte | Barrie |
| Kempenfelt Bay Yacht Club | Barrie |
| Kempenfelt Community Players | Barrie |
| Kempenfelt Quilters Guild, Guilde de broderie en matelassage Kempenfelt | Barrie |
| Kidney Foundation of Canada, Barrie, Programme de vêtements du rein | Barrie |
| Kid's Closet | Barrie |
| Kids for Turtles Environmental Education, Invasive Species Pulls, Orillia | Orillia |
| Kids for Turtles Environmental Education, Orillia | Orillia |
| Kinark Child and Family Services, Région du comté de Simcoe - Bureau de Barrie, Counselling familial, individuel et en groupe | Barrie |
| Kinark Child and Family Services, Région du comté de Simcoe - Bureau de Barrie, Programme SNAP - Stop Now And Plan program | Barrie |
| Kinark Child and Family Services, Région du comté de Simcoe - Bureau de Barrie, Service d'intervention en cas de crise auprès des jeunes du comté de Simcoe | Barrie |
| Kinark Child and Family Services, Région du comté de Simcoe - Bureau de Barrie, Traitement en résidence | Barrie |
| Kinark Child and Family Services, Région du comté de Simcoe - Bureau de Midland, Counselling familial, individuel et en groupe | Midland |
| Kinette Club of Collingwood, Club Kinette de Collingwood | Collingwood |
| Kinette Club of Wasaga Beach, The, Wasaga Beach and District, Club Kinette de Wasaga Beach | Wasaga Beach |
| King Edward Choir (Barrie), le choral King Edward (Barrie) | Barrie |
| King Place Retirement Residence, King Place | Midland |
| King Place Retirement Residence, Programme de soins de répit, King Place | Midland |
| King's Wharf Theatre, Operated by Drayton Entertainment, Théâtre King's Wharf, exploité par Drayton Entertainment | Penetanguishene |
| Kiwanis Club of Orillia, Orillia - Mailing Address, Kiwanis Childrens Safety Village | Orillia |
| Knights of Columbus Huronia Council #1627, Penetanguishene, Salles de réunion | Penetanguishene |
| Knights of Columbus Laurier Council 2004, Midland, Les Chevaliers de Colomb, Laurier Council 2004 | Midland |
| Knox Presbyterian Church, École biblique de vacances, Midland | Midland |
| Knox Presbyterian Church, Soupe populaire Gift of Grace, Midland | Midland |
| Koalaroo Preschool, Garderie éducative Koalaroo | Barrie |
| Koryukan Karate Midland, Koryu Karate Midland | Midland |
| Kumon Centre - Orillia, Orillia Kumon Centre, Centre Kumon Orillia | Orillia |
| Kuruka Equestrian, Équitation Kuruka | Simcoe (Comté) |
| Kuruka Equestrian, Camps de jour | Simcoe (Comté) |