- AHAA stands for Association of Hispanic Advertising Agencies
- AHAA stands for American Hearing Aid Associates
- AHAA stands for Andalusian Horse Association of Australasia (est. 1973; Torquay, Victoria, Australia)
- AHAA stands for Adolescent Health and Academic Achievement Study
- AHAA stands for Affordable Housing Action Alliance (est. 1997)
- AHAA stands for Ancient Healing Arts Association (alternative medicine; various locations)
AHAA