| Call-A-Cab | Peterborough |
| Canada. Canada Revenue Agency, Tax Credits for Caregivers | Ottawa |
| Canada. Canada Revenue Agency [Peterborough], Peterborough - Trent University, Community Volunteer Income Tax Program, Peterborough - Trent University | Peterborough |
| Canada. Correctional Service Canada, Peterborough Parole Office, Parole Services, Peterborough Parole Office | Peterborough |
| Canada. Health Canada, Ontario Region, First Nations and Inuit Health Branch - Non-insured Health Benefits | Ottawa (City of) |
| Canada. Members of Parliament [Central East], Haliburton-Kawartha Lakes-Brock Riding, Federal Constituency Office - Haliburton-Kawartha Lakes-Brock Riding - Jamie Schmale MP | Kawartha Lakes |
| Canada. Members of Parliament [Central East], Northumberland-Peterborough South Riding, Federal Constituency Office - Northumberland-Peterborough South Riding - Philip Lawrence MP | Cobourg |
| Canada. Members of Parliament [Central East], Peterborough-Kawartha Riding, Federal Constituency Office - Peterborough-Kawartha Riding - Michelle Ferreri MP | Peterborough |
| Canada. Office of the Veterans Ombudsman | Ottawa |
| Canada. Parks Canada, Trent-Severn Waterway National Historic Site | Peterborough |
| Canada. Veterans Affairs Canada, Peterborough District Office | Peterborough |
| Canada. Veterans Affairs Canada [Toronto area], Scarborough Service Centre, Bureau of Pensions Advocates | Scarborough Central |
| Canadian Anti-Fraud Centre, No physical location | North Bay |
| Canadian Association of Retired Persons, Toronto Head Office | Toronto Downtown West |
| Canadian Authors Association, Peterborough and Area Branch | Orillia |
| Canadian Baptists of Ontario and Quebec, Lakefield Baptist Church | Lakefield |
| Canadian Cancer Society - Ontario Division, Smokers' Helpline | Toronto Downtown North |
| Canadian Centre for Victims of Torture, Scarborough | Scarborough Central |
| Canadian Centre for Victims of Torture, Victoria Park Hub | Scarborough Central |
| Canadian Continence Foundation (The), Peterborough - Head Office | Peterborough |
| Canadian Family Health Counselling, Peterborough | Peterborough |
| Canadian Hearing Services, Communication Devices and Interpreting Services | |
| Canadian Hearing Services, Connect Mental Health Counselling | |
| Canadian Hearing Services, Hearing Care Counselling Program | |
| Canadian Hearing Services, Ontario Employment Assistance Services, Peterborough, Mailing Address | |
| Canadian Mental Health Association Haliburton, Kawartha, Pine Ridge, Dual Diagnosis Program, Peterborough - George St N | Peterborough |
| Canadian Mental Health Association Haliburton, Kawartha, Pine Ridge, Peterborough - 415 Water St, Administration Office | Peterborough |
| Canadian Mental Health Association Haliburton, Kawartha, Pine Ridge, Peterborough - George St N, Peterborough Office | Peterborough |
| Canadian Mental Health Association Haliburton, Kawartha, Pine Ridge, Supportive Housing, Peterborough - George St N | Peterborough |
| Canopy Support Services, Peterborough, Adult Protective Services | Peterborough |
| Canopy Support Services, Peterborough, Autism Services | Peterborough |
| Canopy Support Services, Peterborough, Behavioural Consultation Services | Peterborough |
| Canopy Support Services, Peterborough, Fetal Alcohol Spectrum (FASD) | Peterborough |
| Capacity Assessment & Risk Evaluation for Seniors, Shauna MacEachern Occupational Therapy PC | Lindsay |
| Capitol Taxi | Peterborough |
| CarePartners, Peterborough Branch, CarePartners, Peterborough Branch | Peterborough |
| Cathedral Court | Peterborough |
| Cavan Monaghan. Fire Department | Cavan Monaghan |
| Cavan Monaghan. Municipal Office, Bruce Johnston Branch, Cavan Monaghan Library | Cavan Monaghan |
| Cavan Monaghan. Municipal Office | Millbrook |
| Cavan Monaghan. Municipal Office, Milbrook Branch, Cavan Monaghan Library | Millbrook |
| CBI Home Health, Peterborough | Peterborough |
| CCRC, Housing Resource Centre, Peterborough - George St N | Peterborough |
| CCRC, Peterborough - George St N, Community Counselling and Resource Centre | Peterborough |
| CCRC, Peterborough - George St N, Professional Counselling Program and Employee Assistance Programs | Peterborough |
| Cephas Christian Reformed Church, Cephas Church | Peterborough |
| Charlotte Pantry | Peterborough |
| Chartwell Jackson Creek Retirement Residence | Peterborough |
| Chemung Lake District Lions Club | Selwyn Township |
| Christian Horizons, Central East District Office | Peterborough |
| Closing the Gap Healthcare, Lindsay, Rehabilitation Services - Lindsay Location | Kawartha Lakes |
| Coach Canada, Coach Canada - Administration | Peterborough |
| Coach Canada, Megabus | Peterborough |
| Co-Dependents Anonymous, Co-Dependents Anonymous - Peterborough | Peterborough |
| CoHealth | Toronto |
| College of Audiologists and Speech-Language Pathologists of Ontario | Toronto Downtown North |
| College of Chiropodists of Ontario | Toronto Downtown Central |
| College of Chiropractors of Ontario | Toronto Downtown Central |
| College of Dietitians of Ontario | North York |
| College of Massage Therapists of Ontario | Toronto Downtown North |
| College of Naturopaths of Ontario | Toronto Downtown Central |
| College of Nurses of Ontario | Toronto Downtown North |
| College of Occupational Therapists of Ontario | Toronto Downtown Central |
| College of Opticians of Ontario | Toronto Downtown Central |
| College of Optometrists of Ontario | Toronto Downtown North |
| College of Physicians and Surgeons of Ontario | Toronto Downtown Central |
| College of Physicians and Surgeons of Ontario | Toronto Downtown Central |
| College of Physiotherapists of Ontario | Toronto Downtown Central |
| College of Respiratory Therapists of Ontario | Toronto Downtown Central |
| ComForCare Home Care Peterborough | Peterborough |
| Comfort Keepers Peterborough | Peterborough |
| Community Care Peterborough, Apsley Office | Apsley |
| Community Care Peterborough, Buckhorn Office | Buckhorn |
| Community Care Peterborough, Caremobile, Peterborough Office | Peterborough |
| Community Care Peterborough, Chemung Office | Ennismore |
| Community Care Peterborough, Peterborough Office | Peterborough |
| Community Care Peterborough, Havelock Office | Havelock-Belmont-Methuen |
| Community Care Peterborough, Home at Last, Peterborough Office | Peterborough |
| Community Care Peterborough, Lakefield Office | Selwyn Township |
| Community Care Peterborough, Millbrook Office | Cavan Monaghan |
| Community Care Peterborough, Peterborough Office, Administration | Peterborough |
| Community Care Peterborough, Peterborough Office, Foot Care Clinic | Peterborough |
| Community Christmas Day Dinner, Norwood | Asphodel-Norwood |
| Community Futures Peterborough | Peterborough |
| Community Living Trent Highlands, Haliburton - Victoria St, Family Support | Haliburton |
| Community Living Trent Highlands, Lindsay - McLaughlin Rd, Family Support | Kawartha Lakes |
| Community Living Trent Highlands, Peterborough - Aylmer St, Administration, Peterborough - Aylmer St | Peterborough |
| Community Living Trent Highlands, Peterborough - Aylmer St, Family Support | Peterborough |
| Community Living Trent Highlands, Respite NOW, Lindsay - McLaughlin Rd | Lindsay |
| Community Race Relations Committee of Peterborough | Peterborough |
| ConnexOntario | London |
| ConnexOntario, Ontario Problem Gambling Helpline | London |
| Continuum Care Inc, No Physical Location | Peterborough |
| Curve Lake First Nation, Cultural Centre | Selwyn Township |
| Curve Lake First Nation, Curve Lake Health Centre - WshkiiGomaang MnoBmaadziwin Gamig | Selwyn Township |
| Cystic Fibrosis Canada, Peterborough - Mailing Address, Peterborough and District Chapter | Peterborough |
