- Pacific Islands AIDS Foundation (2003 - )
- Pacific Regional HIV/AIDS Project (2003 - )
- Pacific/Oceania
- Pact (1971 - )
- PACT Cambodia
- Pakistan, Islamic Republic of Pakistan
- Pakistan, Islamic Republic of Pakistan, National AIDS Control Programme (1990 - )
- Palau, Republic of Palau
- Palliative care
- Panos (1986 - )
- Papua New Guinea, Independent State of Papua New Guinea
- Papua New Guinea, Independent State of, National AIDS Council of Papua New Guinea (1997 - )
- Patents
- see Intellectual property - PATH (1978 - )
- PATH Thailand
- Pathfinder International (1957 - )
- Penyinar
- see Brunei Darussalam AIDS Council (2000 - ) - People Living With HIV/AIDS
- People's Republic of Bangladesh, Bangladesh
- People's Republic of China (PRC), China
- Philippine National AIDS Council (1992 - ), Philippines, Republic of the
- Philippines, Republic of the Philippines
- Philippines, Republic of the, Philippine National AIDS Council (1992 - )
- PIAF
- see Pacific Islands AIDS Foundation (2003 - ) - Pitcairn Islands, Pitcairn, Henderson, Ducie, and Oeno Islands
- Pitcairn, Henderson, Ducie, and Oeno Islands, Pitcairn Islands
- PLHA
- see People Living With HIV/AIDS - PLWHA
- see People Living With HIV/AIDS - PNAC
- see Philippine National AIDS Council (1992 - ), Philippines, Republic of the - PNG
- see Papua New Guinea, Independent State of Papua New Guinea - PNG Business Coalition on HIV/AIDS (2006 - )
- Police
- see Uniformed services - POLICY Project
- Political Determinants
- see Determinants of the epidemic - Population Council (1952 - )
- Population Foundation of India (1970 - )
- Poverty
- see Determinants of the epidemic - Prejudice
- see Stigma and discrimination - Prevention
- Prevention
- see Condoms - Prevention
- see Microbicides - Prevention
- see Vaccines - PRHP
- see Pacific Regional HIV/AIDS Project (2003 - ) - Prisons
- Private sector
- Prostitution
- see Sex workers and clients - PT
- see PT Foundation (1987 - ) - PT Foundation (1987 - )
- Public education
- see Communications programming