- Acquired immunodeficiency syndrome
- see HIV and AIDS - Activism
- see Advocacy - Advocacy
- Agricultural/rural development
- Air force
- see Uniformed services - Antenatal care
- see Parent-to-child transmission - Antiretroviral therapy
- see Treatment - Antiretroviral treatment
- see Treatment - Army
- see Uniformed services - ART
- see Parent-to-child transmission