APPO
| Acronym | Definition |
|---|---|
| APPO | Assembly of the Peoples of Oaxaca (est. 2006; Mexico) |
| APPO | Asamblea Popular del Pueblo de Oaxaca (Spanish: Popular Assembly of the People of Oaxaca) |
| APPO | Asia-Pacific Panasonic Open (golf tournament) |
| APPO | Association of Professional Police Officers (union) |
| APPO | Assistance Program for Pet Owners |
| APPO | Academic Planning and Performance Office (University of Leeds; UK) |
| APPO | Accounts Payable and Purchase Orders |