Organization / Program Name(s)Located In
Nanny Angel Network (GTA), North York Office, Child Care and SupportToronto
Nar-Anon Family Groups, Halton MeetingsHalton Region
Narcotics AnonymousHalton Region
Nasagiweya Historical SocietyMilton
Naseeha Muslim Youth HelplineMississauga
Nassagaweya Presbyterian ChurchMilton
Nassagaweya Tennis ClubMilton
National Canadian Lawyers' InitiativeToronto
National Cycling Institute MiltonMilton
National Eating Disorder Information CentreToronto Downtown Central
National Initiative for the Care of the Elderly, Talk2Nice, Toronto HomeShare ProgramToronto
National ME / FM Action NetworkOttawa
National NewsMedia CouncilToronto
National Pardon CentreToronto
National Pensioners FederationMississauga
National Service DogsCambridge
National Student Loans Service CentreMississauga
National Trust for CanadaOttawa
Native Canadian Centre of TorontoToronto
Native Child and Family Services of Toronto, Women's Transition HouseToronto
Native Horizons Treatment CentreNew Credit
Native Women's Association of CanadaOttawa
Native Women's Resource Centre of Toronto, Community ProgramsToronto
Neighbourhood Care CanadaClarkson
Nelson Youth CentresBurlington
Neurofibromatosis OntarioLondon
New Horizons Media Inc., New CanadiansPickering
New Life Deaf Church, MiltonMilton
New Life Pentecostal ChurchMilton
New Street Christian Reformed ChurchBurlington
Newcomer Centre of PeelMississauga
NewLife Fertility Centre, Burlington, Reproductive CareBurlington
Newlife Fertility Centre, Milton, Reproductive CareMilton
Newlife Fertility Centre, Oakville, Reproductive CareOakville
Niagara Escarpment CommissionGeorgetown
Ninth Life Cat Rescue of OntarioOakville
Nisa Helpline, Muslim Women's Helpline 
Nisa Homes, Administrative Office, Nisa Homes, MississaugaMississauga
No One Goes Hungry in HaltonHalton Region
Normandy Medical ClinicHalton Hills
North Burlington Baptist ChurchBurlington
North Burlington Medical Centre, Walk-in Medical ClinicBurlington
North Burlington Tennis ClubBurlington
North BurLINKton Community GroupBurlington
North Central Community AssociationBurlington
North Halton Girls Hockey AssociationGeorgetown
North Halton Kitten Rescue, Mailing AddressGeorgetown
North Halton Rugby Football ClubGeorgetown
North Oakville Ward 7 Residents' Association, OakvilleOakville
Northridge Long Term Care CentreOakville
Norval Community AssociationHalton Hills
Norval Presbyterian ChurchHalton Hills
Norval United ChurchHalton Hills
Nottinghill Co-operative Preschool, Licensed Child Care CentreOakville
NPower CanadaToronto
Nucleus Independent LivingOakville
Nurse Next Door Home Care Services, Oakville and Burlington, Private Home Care ServicesOakville
Nurse Next Door Home Care Services, Milton, Private Home Care ServicesMilton
Nutrition PathwayOakville
Nutrition Screening, Ontario - No Physical AddressToronto