| K and J Pharmacy | Clinton |
| Kagita Mikam Aboriginal Employment and Training, Peterborough Office | Peterborough |
| Kaitlyn Bates Initiative | Cobourg |
| Karen Stenning, Speech-Language Pathologist | Peterborough |
| Karma Connection Yoga, Huntsville | Huntsville |
| Kasper Transportation, No physical location, Owen Sound to/from Guelph Route | Owen Sound |
| Katrine Community Centre | Armour |
| Katt Baxter's Music Studio, Katt Baxter’s Music Studio | Cobourg |
| Kawartha - Haliburton Crime Stoppers | Lindsay |
| Kawartha /Haliburton Victim Services, Victims Crisis Assistance Ontario | Lindsay |
| Kawartha Ancestral Research Association Inc. | Peterborough |
| Kawartha Art Gallery | Lindsay |
| Kawartha Birth and Lactation | Buckhorn |
| Kawartha Cardiology Clinic | Peterborough |
| Kawartha Care Wellness Centre | Lindsay |
| Kawartha Choice FarmFresh | Lindsay |
| Kawartha Community Midwives | Peterborough |
| Kawartha Conservation | Lindsay |
| Kawartha Family Business Group | Peterborough |
| Kawartha Family Court Assessment Service | Peterborough |
| Kawartha Field Naturalists | Fenelon Falls |
| Kawartha Food Share | Peterborough |
| Kawartha Home & Health Care Services | Peterborough |
| Kawartha Hooks and Needles Guild, No Physical Address | Peterborough |
| Kawartha Kavaliers Drum Corps Incorporated, Lindsay - 260 Kent St W | Lindsay |
| Kawartha Komets Special Needs Hockey Program | Peterborough (County of) |
| Kawartha Lakes & Haliburton Housing Help, Haliburton, Housing Help | Haliburton |
| Kawartha Lakes & Haliburton Housing Services, Lindsay, Housing Services | Lindsay |
| Kawartha Lakes Autism Support | Lindsay |
| Kawartha Lakes Centre of Hope | Lindsay |
| Kawartha Lakes Community Futures Development Corporation | Lindsay |
| Kawartha Lakes Food Coalition | Lindsay |
| Kawartha Lakes Food Source | Lindsay |
| Kawartha Lakes Haliburton Domestic Violence Coordinating Committee | Lindsay |
| Kawartha Lakes Health Care Initiative | Lindsay |
| Kawartha Lakes Paramedic Service, Kawartha Lake Paramedic Service, Headquarters | Kawartha Lakes |
| Kawartha Lakes Pregnancy Centre | Lindsay |
| Kawartha Lakes Public Library, Lindsay, Library Administration | Lindsay |
| Kawartha Lakes Public Library, Bethany, Bethany Branch | Bethany |
| Kawartha Lakes Public Library, Bobcaygeon, Bobcaygeon Branch | Bobcaygeon |
| Kawartha Lakes Public Library, Coboconk, Coboconk Branch | Coboconk |
| Kawartha Lakes Public Library, Dunsford, Dunsford Branch | Dunsford |
| Kawartha Lakes Public Library, Fenelon Falls, Fenelon Falls Branch | Fenelon Falls |
| Kawartha Lakes Public Library, Kinmount, Kinmount Branch | Kinmount |
| Kawartha Lakes Public Library, Kirkfield, Kirkfield Branch | Kirkfield |
| Kawartha Lakes Public Library, Lindsay, Lindsay Branch | Lindsay |
| Kawartha Lakes Public Library, Little Britain, Little Britain Branch | Little Britain |
| Kawartha Lakes Public Library, Norland, Norland Branch | Norland |
| Kawartha Lakes Public Library, Oakwood, Oakwood Branch | Oakwood |
| Kawartha Lakes Public Library, Omemee, Omemee Branch | Omemee |
| Kawartha Lakes Public Library, Sebright - Rumohr Dr, Dalton Branch | Sebright |
| Kawartha Lakes Public Library, Woodville, Woodville Branch | Woodville |
| Kawartha Lakes Small Business & Entrerpreneurship Centre | Lindsay |
| Kawartha Lakes Snowmobile Club | Fenelon Falls |
| Kawartha Lakes Soccer Club, Kawartha Inferno | Lindsay |
| Kawartha Lakes Ultrasound and X-ray | Lindsay |
| Kawartha Land Trust | Peterborough |
| Kawartha Manufacturers' Association, Peterborough - George St | Peterborough |
| Kawartha Montessori School | Otonabee-South Monaghan |
| Kawartha Nordic Ski Club | North Kawartha |
| Kawartha North Family Health Team, Fenelon Falls - Colborne St, Fenelon Falls Clinic | Fenelon Falls |
| Kawartha North Family Health Team, Bobcaygeon - East St S, Bobcaygeon Clinic | Bobcaygeon |
| Kawartha Participation Projects Foundation | Peterborough |
| Kawartha Pine Ridge District School Board, Peterborough - Fisher Dr, Education Centre | Peterborough |
| Kawartha Pine Ridge District School Board, Campbellford, Literacy and Basic Skills | Campbellford |
| Kawartha Pine Ridge District School Board, Cobourg - D'Arcy St, Centre for Individual Studies | Cobourg |
| Kawartha Pine Ridge District School Board, Cobourg - D'Arcy St, Centre for Individual Studies - Adult High School Diploma Program | Cobourg |
| Kawartha Pine Ridge District School Board, Cobourg - D'Arcy St, Centre for Individual Studies - Literacy and Basic Skills | Cobourg |
| Kawartha Pine Ridge District School Board, Peterborough - Fisher Dr, Ontario Youth Apprenticeship Program | Peterborough |
| Kawartha Pine Ridge District School Board, Peterborough - McDonnel St, Literacy and Basic Skills | Peterborough |
| Kawartha Pine Ridge District School Board, Peterborough - McDonnel St, Peterborough Alternative and Continuing Education Campus | Peterborough |
| Kawartha Potters Guild | Peterborough |
| Kawartha Rock and Fossil Club | Peterborough |
| Kawartha Settlers' Village | Bobcaygeon |
| Kawartha Sexual Assault Centre | Peterborough |
| Kawartha Stamp Club | Peterborough |
| Kawartha Tai Chi Club, Peterborough | Peterborough |
| Kawartha Therapy Services | Peterborough |
| Kawartha Total Foot Care Centre | Bobcaygeon |
| Kawartha Trent Synchro Club | Peterborough |
| Kawartha Village Co-op | Peterborough |
| Kawartha World Issues Centre | Peterborough |
| Kawartha World Issues Centre, Peterborough, TRACKS Youth Program | Peterborough |
| Kawartha Youth Orchestra | Peterborough |
| Kawartha Youth Unlimited, The Bridge Youth Centre, Peterborough Youth Unlimited | Peterborough |
| Kawartha Youth Unlimited, Haliburton - Dysart Ave, Haliburton Youth Unlimited | Haliburton County |
| Kawartha Youth Unlimited, Kawartha Lakes - Mailing Address, Kawartha Lakes | Kawartha Lakes |
| Kawartha Youth Unlimited, Lakefield - Hill St, Lakefield Youth Unlimited | Lakefield |
| Kawartha Youth Unlimited, Lakefield Income Tax Clinics | Lakefield |
| Kawartha-Haliburton Children's Aid Society, Peterborough | Peterborough |
| Kawartha-Haliburton Children's Aid Society, City of Kawartha Lakes | Lindsay |
| Kawartha-Haliburton Children's Aid Society, Haliburton | Haliburton |
| Kawartha-Haliburton Children's Foundation | Peterborough |
| Kayla House | Orillia |
| Kearney and Area Public Library | Kearney |
| Kearney Community Centre, Kearney. Municipal Office | Kearney |
| Kearney Fire and Emergency Services | Kearney |
| Kearney. Municipal Office | Kearney |
| Keating's Pharmacy | Seaforth |
| Keene Curling Club | Otonabee-South Monaghan |
| Keene Lions Club | Keene |
| Keene Pumpkin Festival and Antique Car & Truck Show, Keene Pumpkin Festival and Car Show | Keene |
| Kelly Shires Breast Cancer Foundation, Kelly Shires Breast Cancer Snow Run | Midland |
| Kempenfelt Bay Athletic Club, Wrestling Team | Barrie |
| Kempenfelt Bay School | Barrie |
| Kempenfelt Bay Yacht Club | Barrie |
| Kempenfelt Community Players | Barrie |
| Kempenfelt Quilters Guild | Barrie |
| Ken Marek Lifegates Unlimited | Barrie |
| Kent Lawncare and Property Maintenance (Allan) | Osprey |
| Kerry's Place Autism Services, Durham Resource Centre, Durham Resource Centre, Kerry's Place Autism Services, Durham Resource Centre, Kerry's Place Autism Services, Durham Resource Centre | Oshawa |
| Keystone Child, Youth & Family Services, Owen Sound - 3rd Ave W, Birth to Senior Kindergarten Mental Health Program | Owen Sound |
| Keystone Child, Youth & Family Services, Owen Sound - 3rd Ave W, Counselling Program | Owen Sound |
| Keystone Child, Youth & Family Services, Owen Sound - 3rd Ave W, Keystone Prevention Programs | Owen Sound |
| Keystone Child, Youth & Family Services, Unpublished, Live In Treatment Program | Owen Sound |
| Keystone Child, Youth and Family Services, Owen Sound - 3rd Ave W | Owen Sound |
| KFP Consulting & Associates | Lindsay |
| KICX 106 FM. Orillia | Orillia |
| Kidney Foundation of Canada, Barrie, Kidney Clothes Program | Barrie |
| Kidney Foundation of Canada, Ontario Branch | Mississauga |
| Kids & Us Community Childcare and Family Education Centres, Markdale | Markdale |
| Kids & Us Community Childcare and Family Education Centres, Ayton, Ayton Kids Club Before and Afterschool Program | Ayton |
| Kids & Us Community Childcare and Family Education Centres, Dundalk, Dundalk Kids & Us Community Childcare Centre | Dundalk |
| Kids & Us Community Childcare and Family Education Centres, Durham, Durham Kids & Us Community Childcare Program | Durham (Village of) |
| Kids & Us Community Childcare and Family Education Centres, Holstein, Holstein Kids & Us Community Childcare Program | Southgate |
| Kids & Us Community Childcare and Family Education Centres, Markdale, Markdale Kids & Us Community Childcare Program | Markdale |
| Kids & Us Community Childcare and Family Education Centres, Maxwell, Osprey Kids & Us Community Childcare Program | Maxwell |
| Kids & Us Community Childcare and Family Education Centres, Paisley, Paisley Kids & Us Community Childcare Program | Paisley |
| Kid's Closet | Barrie |
| KIDS Co-op Nursery School | Kincardine |
| Kids First Inc. | Lindsay |
| Kids for Turtles Environmental Education, Orillia | Orillia |
| Kids for Turtles Environmental Education, Orillia, Invasive Species Pulls | Orillia |
| Kids Help Phone | Toronto Downtown Central |
| Kids Help Phone, Crisis Text Line | Toronto Downtown Central |
| Kids Street Cooperative Nursery School | Port Elgin |
| Kimberley Hearing Centre | Bracebridge |
| Kin Canada, Belgrave Community Hall, Kinsmen Club of Belgrave | North Huron |
| Kin Canada, Hensall, Hensall and District Kinsmen Club | Hensall |
| Kin Canada, Stratford, Kinsmen Club | Stratford |
| Kinark Child and Family Services, Simcoe County Region - Barrie Office | Barrie |
| Kinark Child and Family Services, Peterborough - Armour Rd | Peterborough |
| Kinark Child and Family Services, Cobourg, Cobourg Office | Cobourg |
| Kinark Child and Family Services, Cobourg, Kinark Supervised Access Centre - Northumberland | Cobourg |
| Kinark Child and Family Services, Cobourg, Youth Crisis Response Program | Cobourg |
| Kinark Child and Family Services, Haliburton, Kinark Supervised Access Centre | Haliburton |
| Kinark Child and Family Services, Kinark Outdoor Centre, Kinark Outdoor Center | Minden |
| Kinark Child and Family Services, Lindsay, Kawartha Pine Ridge Supervised Access Centre | Lindsay |
| Kinark Child and Family Services, Markham Office, Ontario Autism Program - Single Point of Access | Markham |
| Kinark Child and Family Services, Peterborough - Armour Rd, STRIVE | Peterborough |
| Kinark Child and Family Services, Peterborough - Armour Rd, Supervised Access Centre | Peterborough |
| Kinark Child and Family Services, Simcoe County Region - Barrie Office, Family, Individual, and Group Counselling | Barrie |
| Kinark Child and Family Services, Simcoe County Region - Barrie Office, Live-In Treatment | Barrie |
| Kinark Child and Family Services, Simcoe County Region - Barrie Office, SNAP - Stop Now And Plan program | Barrie |
| Kinark Child and Family Services, Simcoe County Region - Barrie Office, Youth Crisis Response Services Simcoe County | Barrie |
| Kinark Child and Family Services, Simcoe County Region - Midland Office, Family, Individual, and Group Counselling | Midland |
| Kinark Child and Family Services, Simcoe County Region - Midland Office | Midland |
| Kinark Child and Family Services, Simcoe County Region, School Support Program - Autism Spectrum Disorder | Markham |
| Kincardine Agricultural Society | Kincardine (Town of) |
| Kincardine and District Ministerial Food Bank | Kincardine (Town of) |
| Kincardine Area Community Services Association, Christmas Assistance | Kincardine |
| Kincardine Baptist Church | Kincardine (Town of) |
| Kincardine Community Garden | Kincardine |
| Kincardine Community Medical Clinic | Kincardine |
| Kincardine Curling Club | Kincardine (Town of) |
| Kincardine Dental Hygiene Clinic | Kincardine |
| Kincardine Family Health Team | Kincardine (Town of) |
| Kincardine Lighthouse Museum | Kincardine (Town of) |
| Kincardine Power & Sail Squadron | Kincardine |
| Kincardine Pride Inc., No Physical Address | Kincardine |
| Kincardine Theatre Guild, Kincardine Centre for the Arts | Kincardine |
| Kincardine Trails Association | Kincardine |
| Kincardine. Municipal Office, Kincardine - Concession 5 | Kincardine |
| Kincardine. Municipal Office, Kincardine Fire Station, Community Emergency Management Coordinator | Kincardine |
| Kincardine. Municipal Office, Kincardine Fire Station, Fire Department | Kincardine (Town of) |
| Kinderschool @ Mark St, Kinderschool @ Mark St. | Peterborough |
| Kinderschool @ St. Barnabas | Peterborough |
| Kinette Club of Mitchell, Mitchell - Mailing Address | Mitchell |
| Kinette Club of Wasaga Beach, The, Wasaga Beach and District | Wasaga Beach |
| King Edward Choir (Barrie) | Barrie |
| King Place Retirement Residence, King Place Retirement, King Place | Midland |
| King Place Retirement Residence, King Place Retirement, Respite Care Program | Midland |
| Kingdom Hall of Jehovah's Witnesses | Midland |
| King's Wharf Theatre, Operated by Drayton Entertainment | Penetanguishene |
| Kinmount & Area Artisans Marketplace | Kinmount |
| Kinmount Pharmacy | Kinmount |
| Kinmount Playschool | Kinmount |
| Kinmount Seniors' Club #714 | Kinmount |
| Kinsmen Civic Centre | Peterborough |
| Kinsmen Club, Listowel | Listowel |
| Kinsmen Club, St Marys - Mailing Address Only | St Marys |
| Kinsmen Club of Barrie, No Physical Address, K-40 Women | Barrie |
| Kinsmen Club of Barrie, K-40 Club | Barrie |
| Kinsmen Club of Lindsay, Lindsay, Annual Toy Drive | Lindsay |
| Kinsmen Club of Monkton & District, Monkton - Mailing Address | Monkton |
| Kirkton Agricultural Society, Kirkton Fall Fair | Kirkton |
| Kirkton Horticultural Society, Kirkton-Woodham Community Centre | Kirkton |
| Kirkton Women's Institute, Kirkton - Mailing Address | Perth South |
| Kiwanis Club of Meaford | Meaford (Town of) |
| Kiwanis Club of Stratford, Burnside AgriPlex | Stratford |
| Kiwanis Festival of the Performing Arts | Stratford |
| Kiwanis International, Barrie - Mailing Address, Kiwanis Club of Barrie | Barrie |
| KLH Housing Corporation, Kawartha Lakes Haliburton Housing Corporation | Lindsay |
| Kneading Massage | Penetanguishene |
| Knights of Columbus, Tottenham | Tottenham |
| Knights of Columbus, Barrie, Barrie Council 1626 | Barrie |
| Knights of Columbus, Walkerton | Walkerton |
| Knights of Columbus, Goderich, Goderich Father Nagle Council 5420 | Goderich |
| Knights of Columbus, Huntsville, Council 7851 | Huntsville |
| Knights of Columbus, Gravenhurst, Council 6861 | Gravenhurst |
| Knights of Columbus, Bracebridge, Monsignor Michael O'Leary Council 9850 | Bracebridge |
| Knights of Columbus, Stratford, Stratford Kilroy Council 1431 | Stratford |
| Knights of Columbus, Mitchell, Mitchell Monsignor T J McCarthy Council 9252 | Mitchell |
| Knights of Columbus, Listowel, Listowel Mary and Joseph Council 8168 | Listowel |
| Knights of Columbus, Barrie, Meeting Facilities, Banquet Hall | Barrie |
| Knights Of Columbus Hall, Trenton, Knights Of Columbus | Trenton |
| Knights of Columbus Huronia Council #1627, Penetanguishene | Penetanguishene |
| Knights of Huronia, Knight Haven Bowling Lanes, Conference & Banquet Hall, Meeting Facilities | Penetanguishene |
| Knitted Knockers of Canada, Barrie Drop Off Location | Barrie |
| Knollcrest Lodge | Milverton |
| Knollcrest Lodge, Community Outreach Services | Milverton |
| Knollcrest Lodge, Community Outreach Services - Foot Care Clinic | Milverton |
| Knollcrest Lodge, Community Outreach Services - Lifeline Emergency Response System | Milverton |
| Knollcrest Lodge, Community Outreach Services - Meals on Wheels | Milverton |
| Knollcrest Lodge, Community Outreach Services - Perth East Transportation | Milverton |
| Knollcrest Lodge, Community Outreach Services - Social and Dining Programs | Milverton |
| Knollcrest Lodge, Community Outreach Services - VISITING - Volunteer Visiting and Telephone Reassurance | Milverton |
| Knollcrest Lodge, Community Outreach Services - Volunteer Transportation | Milverton |
| Knollcrest Lodge, Community Outreach Services - Wellness for Seniors | Milverton |
| Knox Flos Presbyterian Church | Elmvale |
| Knox Holstein, Amos Dromore and Knox Normanby Presbyterian Pastoral Charge, Holstein Presbyterian Church, Christmas Hampers Egremont/Holstein area | Holstein |
| Knox Presbyterian Church, Alliston | Alliston |
| Knox Presbyterian Church, Dunedin | Clearview (Simcoe County) |
| Knox Presbyterian Church, Tiverton | Tiverton |
| Knox Presbyterian Church, Goderich | Goderich |
| Knox Presbyterian Church, Midland | Midland |
| Knox Presbyterian Church, Port Carling | Port Carling |
| Knox Presbyterian Church, Stratford | Stratford |
| Knox Presbyterian Church, Midland, Gift of Grace Soup Kitchen | Midland |
| Knox Presbyterian Church, Midland, Vacation Bible School | Midland |
| Knox Presbyterian Church, Stratford, Alley Thrift Store Mission (The) | Stratford |
| Knox Presbyterian Church, Stratford, Cancer Care Mission Wigs & Accessories | Stratford |
| Knox Presbyterian Church Bayfield, Bayfield | Bayfield |
| Knox Presbyterian Church. Uptergrove, Uptergrove | Ramara |
| Knox Presbyterian Church. Uptergrove, Uptergrove, Knox Presbyterian Ladies Aid | Ramara |
| Koalaroo Preschool | Barrie |
| KOOL 107.5 FM, Barrie | Barrie |
| Koryukan Karate Midland, Koryu Karate Midland | Midland |
| KPP, Administration | Peterborough |
| Krasman Centre, Richmond Hill - Main Office | Richmond Hill |
| Krasman Centre South Simcoe | Alliston |
| Kumon Centre - Orillia, Orillia Kumon Centre | Orillia |
| Kumon Peterborough West | Peterborough |
| Kunkel Bus Lines, Hanover | Hanover |
| Kuruka Equestrian | Simcoe County |
| Kuruka Equestrian, Day Camps | Simcoe County |
| Kushog Lake Property Owners Association | Algonquin Highlands |
| Kwik K Variety & Bakery, TOK Coachlines Bus Agent | Kincardine |