- AAPO stands for All Amhara People Organization
- AAPO stands for American Association of Police Officers (Los Angeles, CA)
- AAPO stands for African American Professional Organization (Texas A&M University; College Station, TX)
- AAPO stands for Australasian Association of Professional Organisers Inc
- AAPO stands for Association of Advertising Practitioners (Nigeria)
- AAPO stands for Albertans against Poverty Organization (est. 2002; Canada)
AAPO