- ZAA stands for Zone d’Amélioration des Affaires (French: Business Improvement Area; Canada)
- ZAA stands for Zoning Amendment Application
- ZAA stands for Zone of Available Assistance (ecology)
- ZAA stands for Zoroastrian Association of Alberta (Alberta, Canada)
- ZAA stands for Zoological Association of America (est. 2005; Punta Gorda, FL)
- ZAA stands for Zollern Alb Award (Germany)
- ZAA stands for Zama Alumni Association (Zama American High School; Japan; US DoD)
- ZAA stands for Zeeman Atomic Absorption
- ZAA stands for Zona Antigen activity (enzymes)
- ZAA stands for Zone of Advanced Achievement
- ZAA stands for Zoning Agreement Amendment (city planning; various locations)
ZAA