- NAA
- see National AIDS Authority (1999 - ), Cambodia, Kingdom of - NAC
- see National AIDS Committee (1990 - 2000), Vietnam, Socialist Republic of - NAC
- see National AIDS Council of Papua New Guinea (1997 - ), Papua New Guinea, Independent State of - NACAIDS
- see National Advisory Committee on AIDS (1984 - 1988), Australia, Commonwealth of - NACO
- see National AIDS Control Organisation (1992 - ), India, Republic of - NACP
- see National AIDS Control Programme (1990 - ), Pakistan, Islamic Republic of Pakistan - NAF
- see National AIDS Foundation in Mongolia (1998 - ) - NAP
- see National HIV/AIDS and STD Control Programme (1988 - ), Bhutan, Kingdom of Bhutan - NAPWA
- see National Association of People Living With HIV/AIDS (Australia) - Narcotics
- see Injecting drug use - NARI
- see National AIDS Research Institute (1992 - ), Indian Council of Medical Research - National Advisory Committee on AIDS (1984 - 1988), Australia, Commonwealth of
- National AIDS Authority (1999 - ), Cambodia, Kingdom of
- National AIDS Commission (1994 - ), Indonesia, Republic of
- National AIDS Committee (1985 - ), Bangladesh, People's Republic of
- National AIDS Committee (1990 - 2000), Vietnam, Socialist Republic of
- National AIDS Committee, Myanmar (1989 - )
- National AIDS Control Organisation (1992 - ), India, Republic of
- National AIDS Control Programme, Afghanistan, Transitional Islamic State of Afghanistan
- National AIDS Control Programme (1990 - ), Pakistan, Islamic Republic of Pakistan
- National AIDS Council (1987 - ), Maldives, Republic of Maldives
- National AIDS Council of Papua New Guinea (1997 - ), Papua New Guinea, Independent State of
- National AIDS Foundation in Mongolia (1998 - )
- National AIDS Research Institute (1992 - ), Indian Council of Medical Research
- National Association of People Living With HIV/AIDS (Australia)
- The National Bureau of Asian Research (1989 - )
- National Center for AIDS and STD Control (1995 - ), Nepal, Kingdom of
- National Center for HIV/AIDS, Dermatology and STD, Cambodia, Kingdom of Cambodia
- National Centre in HIV Epidemiology and Clinical Research (1986 - ), The University of New South Wales
- National Centre in HIV Social Research (1990 - ), The University of New South Wales
- National Centre of AIDS and STD (1998 - ), China, People's Republic of
- National Committee for Prevention and Control of AIDS, Drugs and Prostitution (2000 - ), Vietnam, Socialist Republic of
- National Committee for the Control of AIDS (1988 - ), Laos, Lao People's Democratic Republic
- National HIV/AIDS and STD Control Programme (1988 - ), Bhutan, Kingdom of Bhutan
- National Institute of Infectious Diseases, Japan, AIDS Research Centre (1988 - )
- National plans
- National Serology Reference Laboratory, Australia (1985 - ), St. Vincent's Institute of Medical Research
- Nauru, Republic of Nauru
- Navy
- see Uniformed services - Naz Foundation International (1996 - )
- NBR
- see The National Bureau of Asian Research (1989 - ) - NCADP
- see National Committee for Prevention and Control of AIDS, Drugs and Prostitution (2000 - ), Vietnam, Socialist Republic of - NCAIDS/STD
- see National Centre of AIDS and STD (1998 - ), China, People's Republic of - NCASC
- see National Center for AIDS and STD Control (1995 - ), Nepal, Kingdom of - NCCA
- see National Committee for the Control of AIDS (1988 - ), Laos, Lao People's Democratic Republic - NCHADS
- see National Center for HIV/AIDS, Dermatology and STD, Cambodia, Kingdom of Cambodia - NCHECR
- see National Centre in HIV Epidemiology and Clinical Research (1986 - ), The University of New South Wales - Needle exchange
- see Injecting drug use - Needle sharing
- see Injecting drug use - Negara Brunei Darussalam, Brunei
- Nepal, Kingdom of Nepal
- Nepal, Kingdom of, National Center for AIDS and STD Control (1995 - )
- New Caledonia, Territory of New Caledonia and Dependencies
- New Zealand
- New Zealand AIDS Foundation
- NFI
- see Naz Foundation International (1996 - ) - Nganampa Health Council
- NGOs
- Niue
- Non-Government Organisations
- see NGOs - North Korea
- see Korea, DPR, Democratic People's Republic of Korea - Northern Mariana Islands, Commonwealth of the Northern Mariana Islands
- Notification
- see Testing, notification and reporting - NRL
- see National Serology Reference Laboratory, Australia (1985 - ), St. Vincent's Institute of Medical Research - NZAF
- see New Zealand AIDS Foundation