| Nar-Anon Family Groups, Halton Meetings | Halton Region |
| Narcotics Anonymous | Halton Region |
| Nasagiweya Historical Society | Milton |
| Nassagaweya Presbyterian Church | Milton |
| Nassagaweya Tennis Club | Milton |
| National Cycling Institute Milton | Milton |
| National Pensioners Federation | Mississauga |
| National Trust for Canada | Ottawa |
| Native Canadian Centre of Toronto | Toronto |
| Native Women's Association of Canada, Gatineau | Gatineau |
| Native Women's Resource Centre of Toronto, Community Programs | Toronto |
| Neurofibromatosis Ontario | London |
| New Life Deaf Church, Milton | Milton |
| New Life Pentecostal Church | Milton |
| Nisa Homes (GTA), Nisa Homes, Mississauga | Mississauga |
| Normandy Medical Clinic | Halton Hills |
| North Burlington Baptist Church | Burlington |
| North Burlington Medical Centre, Walk-in Medical Clinic | Burlington |
| North Burlington Tennis Club | Burlington |
| North BurLINKton Community Group, Dinner Night Out | Burlington |
| North Central Community Association | Burlington |
| North Halton Community Singers | Georgetown |
| North Halton Rugby Football Club | Georgetown |
| Norval United Church, Georgetown | Georgetown |
| Nurse Next Door Home Care Services, Milton, In Home Care Services | Milton |
